{"title":"Melanocortin Pathway Research","description":"\u003ch2\u003eMelanocortin Pathway Research Peptides (RUO) | Peptides Skin\u003c\/h2\u003e\n\u003cp data-start=\"7125\" data-end=\"7732\"\u003eThis collection features research peptides referenced in \u003cstrong data-start=\"7201\" data-end=\"7226\"\u003emelanocortin receptor\u003c\/strong\u003e signaling and pathway-level readouts in \u003cstrong data-start=\"7267\" data-end=\"7292\"\u003econtrolled laboratory\u003c\/strong\u003e settings. Products in this category are supplied for \u003cstrong data-start=\"7346\" data-end=\"7384\"\u003ein-vitro and non-clinical research\u003c\/strong\u003e only and are commonly used in receptor-mediated signaling investigations and assay development workflows.\u003cbr data-start=\"7490\" data-end=\"7493\"\u003eWhere applicable, \u003cstrong data-start=\"7511\" data-end=\"7553\"\u003eCOA \/ analytical testing documentation\u003c\/strong\u003e is available upon request. Handle and store peptide reagents according to laboratory SOPs and stability protocols.\u003cbr data-start=\"7668\" data-end=\"7671\"\u003e\u003cstrong data-start=\"7671\" data-end=\"7732\"\u003eResearch Use Only (RUO). Not for human or veterinary use.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"7734\" data-end=\"7751\"\u003e \u003c\/p\u003e","products":[{"product_id":"melanotan-2","title":"MT-2 (Melanotan II) Synthetic Cyclic Melanocortin Peptide","description":"\u003cstyle\u003e\n  \/* Scoped styles (won't affect Shopify price\/sections) *\/\n  .ps-mt2{width:100%;max-width:100%}\n  .ps-mt2 .ps-card{background:#0b1220;border:1px solid #22304a;border-radius:18px;padding:18px;color:#fff}\n  .ps-mt2 p,.ps-mt2 li,.ps-mt2 td,.ps-mt2 th{color:#fff!important;line-height:1.85;font-size:15px}\n  .ps-mt2 p{margin:10px 0}\n  .ps-mt2 .ps-warning{border-left:4px solid #d4af37;padding:12px 14px;background:rgba(212,175,55,.08);border-radius:12px;margin-bottom:14px}\n  .ps-mt2 .ps-h2{font-size:18px;margin:20px 0 10px;color:#d4af37;letter-spacing:.2px}\n  .ps-mt2 .ps-h2:after{content:\"\";display:block;height:1px;margin-top:8px;background:rgba(212,175,55,.35);width:85%}\n  .ps-mt2 .ps-h3{font-size:15px;margin:14px 0 8px;color:#f1e6b8}\n  .ps-mt2 .ps-list{margin:10px 0 0 18px;padding:0}\n  .ps-mt2 .ps-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:12px}\n  .ps-mt2 .ps-box{border:1px solid #22304a;border-radius:14px;padding:14px;background:rgba(255,255,255,.03)}\n  .ps-mt2 .ps-table{width:100%;border-collapse:collapse;margin-top:10px}\n  .ps-mt2 .ps-table th,.ps-mt2 .ps-table td{border-bottom:1px solid #22304a;padding:10px 8px;text-align:left;vertical-align:top}\n  .ps-mt2 .ps-table th{font-size:13px;font-weight:800;width:42%}\n  .ps-mt2 .ps-table td{font-size:14px}\n  .ps-mt2 .ps-faq{border:1px solid #22304a;border-radius:14px;padding:14px;background:rgba(255,255,255,.03);margin-top:12px}\n  .ps-mt2 .ps-faq .q{margin:0 0 8px;font-weight:900;color:#d4af37;font-size:15px}\n  .ps-mt2 .ps-disclaimer{margin-top:16px;padding:12px 14px;border-radius:14px;background:rgba(255,90,90,.08);border:1px solid rgba(255,90,90,.22);font-size:13px;line-height:1.75;color:#fff!important}\n  @media (min-width: 900px){.ps-mt2 .ps-grid{grid-template-columns:1.2fr .8fr}}\n  @media (max-width:520px){.ps-mt2 .ps-card{padding:14px}.ps-mt2 p,.ps-mt2 li{font-size:14px}.ps-mt2 .ps-h2:after{width:92%}}\n\u003c\/style\u003e\n\u003csection class=\"ps-mt2\"\u003e\n\u003cdiv class=\"ps-card\"\u003e\n\u003cdiv class=\"ps-warning\"\u003e\n\u003cstrong\u003e⚠ Research Use Only (RUO):\u003c\/strong\u003e \u003cstrong\u003eMelanotan 2 (MT-2 \/ MT-II)\u003c\/strong\u003e is supplied strictly for \u003cstrong\u003ein‑vitro\u003c\/strong\u003e and laboratory research. Not for human or veterinary use, not for injection, not for consumption, and not for cosmetic application.\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003eWhat Is Melanotan 2 Peptide (MT-2 \/ MT-II \/ MT2 Peptide)? Synthetic α‑MSH Analog (RUO)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMelanotan 2\u003c\/strong\u003e (also abbreviated \u003cstrong\u003eMT-2\u003c\/strong\u003e or \u003cstrong\u003eMT-II\u003c\/strong\u003e) is a synthetic cyclic heptapeptide described as an analog of \u003cstrong\u003ealpha-melanocyte-stimulating hormone (α‑MSH)\u003c\/strong\u003e. In controlled research settings, the \u003cstrong\u003emelanotan 2 peptide\u003c\/strong\u003e is used to explore \u003cstrong\u003emelanocortin receptor\u003c\/strong\u003e signaling and pathway‑level readouts relevant to melanogenesis, CNS signaling, and metabolic research models. This page is provided for laboratory context only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSEO note (natural terms used on-page):\u003c\/strong\u003e Researchers may also search for \u003cstrong\u003emelanotan 2 peptide\u003c\/strong\u003e, \u003cstrong\u003eMT2 peptide\u003c\/strong\u003e, \u003cstrong\u003eMT-II peptide\u003c\/strong\u003e, \u003cstrong\u003ealpha MSH analog peptide\u003c\/strong\u003e, and \u003cstrong\u003emelanocortin receptor agonist\u003c\/strong\u003e. These phrases are integrated below in RUO-safe, non-clinical context.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"ps-grid\"\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ch2 class=\"ps-h2\"\u003eMelanotan 2 (MT-II \/ MT2 Peptide) Specifications — CAS 121062-08-6, Lyophilized Powder\u003c\/h2\u003e\n\u003ctable aria-label=\"Melanotan 2 specifications\" class=\"ps-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Name\u003c\/th\u003e\n\u003ctd\u003eMelanotan 2 (MT-II)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSequence\u003c\/th\u003e\n\u003ctd\u003eAc-Nle-Asp(1)-His-D-Phe-Arg-Trp-Lys(1)-NH\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCAS Number\u003c\/th\u003e\n\u003ctd\u003e121062-08-6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMolecular Formula\u003c\/th\u003e\n\u003ctd\u003eC\u003csub\u003e50\u003c\/sub\u003eH\u003csub\u003e69\u003c\/sub\u003eN\u003csub\u003e15\u003c\/sub\u003eO\u003csub\u003e9\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMolar Mass\u003c\/th\u003e\n\u003ctd\u003e1024.18 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLyophilized white powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003cth\u003eDocumentation\u003c\/th\u003e\n\u003ctd\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eResearch Use Only (RUO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ch2 class=\"ps-h2\"\u003eMelanotan 2 Mechanism: Melanocortin Receptor Agonist (MC1R, MC3R, MC4R, MC5R) — Research Context\u003c\/h2\u003e\n\u003cp\u003eMelanotan 2 is frequently referenced as a non‑selective \u003cstrong\u003emelanocortin receptor agonist\u003c\/strong\u003e, with activity reported across \u003cstrong\u003eMC1R\u003c\/strong\u003e, \u003cstrong\u003eMC3R\u003c\/strong\u003e, \u003cstrong\u003eMC4R\u003c\/strong\u003e, and \u003cstrong\u003eMC5R\u003c\/strong\u003e in experimental systems. Its cyclic structure is commonly described as supporting enhanced stability compared with linear α‑MSH analogs, which is useful for reproducible assay design and receptor‑signaling workflows.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003eWhere to Buy Melanotan 2 Peptide (MT-II \/ MT2) — Research Use and Documentation\u003c\/h2\u003e\n\u003cp\u003ePeptides Skin supplies \u003cstrong\u003eMelanotan 2 lyophilized powder\u003c\/strong\u003e for controlled laboratory research workflows. Batch-specific documentation may be requested after purchase for manual verification.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eMelanotan 1 vs Melanotan 2: Difference Between Melanotan 1 and 2 in Research Models\u003c\/h2\u003e\n\u003cp\u003eA common query is \u003cstrong\u003ewhat is the difference between melanotan 1 and 2\u003c\/strong\u003e. In research literature, MT‑1 and MT‑2 are discussed as α‑MSH‑related peptides that can differ in sequence design, receptor activity profiles, and experimental behavior. Researchers typically select MT‑2 vs MT‑1 based on study goals, receptor subtype focus (e.g., MC1R\/MC4R), and assay endpoints.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eMelanogenesis \u0026amp; Pigmentation Research: MC1R Signaling Pathways Studied with Melanotan 2\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003emelanotan 2 peptide\u003c\/strong\u003e is widely used to study \u003cstrong\u003emelanogenesis\u003c\/strong\u003e in model systems, including MC1R‑linked signaling and downstream pathway markers associated with melanin production. These experiments may support broader investigations into photobiology, pigmentation biology, and cellular response pathways in non‑clinical models.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eHow to Store Melanotan 2 Peptide (MT2 \/ MT-II): Lyophilized Storage, Stability \u0026amp; Light Protection (SOP)\u003c\/h2\u003e\n\u003cp\u003eFor \u003cstrong\u003ehow to store melanotan 2\u003c\/strong\u003e, laboratories typically keep lyophilized MT‑2 at \u003cstrong\u003e−20°C\u003c\/strong\u003e, protected from light and moisture. Storage should follow your facility SOP and batch documentation. To minimize variability, avoid repeated temperature cycling and limit exposure to humidity.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eHow Long Does Melanotan 2 (MT2 Peptide) Last in the Fridge? Prepared-Solution Stability (RUO)\u003c\/h2\u003e\n\u003cp\u003eAnother frequent question is \u003cstrong\u003ehow long does melanotan 2 last in the fridge\u003c\/strong\u003e. Stability depends on solvent system, concentration, container, and contamination controls. For RUO workflows, prepared solutions are usually treated as short‑term and refrigerated per SOP, with aliquoting used to reduce repeated freeze–thaw cycles. Always follow the stability window defined by your protocol and documentation.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eHow to Reconstitute Melanotan 2 (MT-II \/ MT2 Peptide) for Lab Assays — RUO, No Administration Guidance\u003c\/h2\u003e\n\u003cp\u003eSearches for \u003cstrong\u003ehow to reconstitute melanotan 2\u003c\/strong\u003e are common. In research workflows, reconstitution is performed using sterile technique and an appropriate laboratory‑grade aqueous solvent selected for the assay. Solvent choice, pH, and final concentration are protocol‑dependent; follow your lab SOP and do not use this product for any human or veterinary purpose.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eWhy Choose Peptides Skin for Melanotan 2 (MT-II \/ MT2 Peptide) Research Supply\u003c\/h2\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumented identity:\u003c\/strong\u003e MS confirmation and CoA availability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability:\u003c\/strong\u003e lot documentation for reproducible laboratory workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure logistics:\u003c\/strong\u003e packaging optimized to help protect stability in transit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ps-h2\"\u003eFrequently Asked Questions (FAQs) — Melanotan 2 (MT-2 \/ MT-II) RUO\u003c\/h2\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhat is Melanotan 2 (MT-2 \/ MT-II \/ MT2 peptide)?\u003c\/div\u003e\n\u003cp\u003eMelanotan 2 is a synthetic cyclic heptapeptide described as an α‑MSH analog used in laboratory research to investigate melanocortin receptor signaling and related pathway readouts in controlled models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhere to buy Melanotan 2 for research use only?\u003c\/div\u003e\n\u003cp\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhat is the difference between Melanotan 1 and 2?\u003c\/div\u003e\n\u003cp\u003eMelanotan 1 vs melanotan 2 differences are typically discussed in terms of sequence design and receptor activity profiles. Selection depends on the model, receptor target, and endpoints defined by the study.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eHow to store Melanotan 2 and how long does it last in the fridge?\u003c\/div\u003e\n\u003cp\u003eLyophilized MT‑2 is commonly stored at −20°C. Prepared solutions are typically refrigerated short‑term per SOP; stability depends on solvent and protocol, so follow your lab documentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eHow to reconstitute Melanotan 2 in lab workflows?\u003c\/div\u003e\n\u003cp\u003eReconstitution should be performed using sterile technique and an appropriate laboratory‑grade solvent selected for your assay. Do not interpret this as administration guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-disclaimer\"\u003e\n\u003cstrong\u003eWARNING — Research Use Only (RUO):\u003c\/strong\u003e\u003cbr\u003eFor laboratory research and development purposes only. Not for human or veterinary use, injection, consumption, or cosmetic application. Not intended to diagnose, treat, cure, or prevent any disease. Any mention of mechanisms refers exclusively to controlled research models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"peptidesskin","offers":[{"title":"Default Title","offer_id":47079053066461,"sku":"PS-MELANOTAN-STD","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/7981\/8973\/files\/mt2-peptidesskin-10mg.png?v=1764771998"},{"product_id":"melanotan","title":"Melanotan 1 (Afamelanotide \/ MT-1) Selective MC1R Research Standard","description":"\u003cstyle\u003e\n  \/* Scoped to this description only (won't affect Shopify price\/other sections) *\/\n  .ps-mt1{width:100%;max-width:100%}\n  .ps-mt1 .ps-card{background:#0b1220;border:1px solid #22304a;border-radius:18px;padding:18px;color:#fff}\n  .ps-mt1 p,.ps-mt1 li,.ps-mt1 td,.ps-mt1 th{color:#fff!important;line-height:1.85;font-size:15px}\n  .ps-mt1 p{margin:10px 0}\n  .ps-mt1 .ps-warning{border-left:4px solid #d4af37;padding:12px 14px;background:rgba(212,175,55,.08);border-radius:12px;margin-bottom:14px}\n  .ps-mt1 .ps-h1{margin:0 0 8px;font-size:22px;line-height:1.35;font-weight:900;color:#ffffff}\n  .ps-mt1 .ps-sub{margin:0 0 8px;opacity:.95}\n  .ps-mt1 .ps-h2{font-size:18px;margin:20px 0 10px;color:#d4af37;letter-spacing:.2px}\n  .ps-mt1 .ps-h2:after{content:\"\";display:block;height:1px;margin-top:8px;background:rgba(212,175,55,.35);width:85%}\n  .ps-mt1 .ps-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:12px}\n  .ps-mt1 .ps-box{border:1px solid #22304a;border-radius:14px;padding:14px;background:rgba(255,255,255,.03)}\n  .ps-mt1 .ps-table{width:100%;border-collapse:collapse;margin-top:10px}\n  .ps-mt1 .ps-table th,.ps-mt1 .ps-table td{border-bottom:1px solid #22304a;padding:10px 8px;text-align:left;vertical-align:top}\n  .ps-mt1 .ps-table th{font-size:13px;font-weight:800;width:42%}\n  .ps-mt1 .ps-table td{font-size:14px}\n  .ps-mt1 .ps-list{margin:10px 0 0 18px;padding:0}\n  .ps-mt1 .ps-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}\n  .ps-mt1 .ps-badge{border:1px solid #22304a;background:rgba(255,255,255,.03);padding:6px 10px;border-radius:999px;font-size:13px}\n  .ps-mt1 .ps-faq{border:1px solid #22304a;border-radius:14px;padding:14px;background:rgba(255,255,255,.03);margin-top:12px}\n  .ps-mt1 .ps-faq .q{margin:0 0 8px;font-weight:900;color:#d4af37;font-size:15px}\n  .ps-mt1 .ps-disclaimer{margin-top:16px;padding:12px 14px;border-radius:14px;background:rgba(255,90,90,.08);border:1px solid rgba(255,90,90,.22);font-size:13px;line-height:1.75;color:#fff!important}\n  @media (min-width: 900px){.ps-mt1 .ps-grid{grid-template-columns:1.2fr .8fr}}\n  @media (max-width:520px){.ps-mt1 .ps-card{padding:14px}.ps-mt1 p,.ps-mt1 li{font-size:14px}.ps-mt1 .ps-h2:after{width:92%}}\n\u003c\/style\u003e\n\u003csection class=\"ps-mt1\"\u003e\n\u003cdiv class=\"ps-card\"\u003e\n\u003cdiv class=\"ps-warning\"\u003e\n\u003cstrong\u003e⚠ FOR RESEARCH USE ONLY (RUO):\u003c\/strong\u003e Melanotan 1 is supplied strictly for \u003cstrong\u003ein-vitro\u003c\/strong\u003e and laboratory research. Not for human or veterinary use, not for injection, not for consumption, and not for cosmetic application.\u003c\/div\u003e\n\u003ch2 class=\"ps-h1\"\u003eMelanotan 1 Peptide (MT-1) — Research Grade α-MSH Analog\u003c\/h2\u003e\n\u003cp class=\"ps-sub\"\u003eMelanotan 1 (MT-1) is a synthetic research peptide referenced in laboratory literature as an α-MSH analog used to study melanocortin receptor signaling and pathway-level readouts in controlled experimental models.\u003c\/p\u003e\n\u003cdiv aria-label=\"Key quality highlights\" class=\"ps-badges\"\u003e\n\u003cspan class=\"ps-badge\"\u003eRUO \/ Research Grade\u003c\/span\u003e \u003cspan class=\"ps-badge\"\u003eLyophilized Powder\u003c\/span\u003e \u003cspan class=\"ps-badge\"\u003eBatch Traceability\u003c\/span\u003e \u003cspan class=\"ps-badge\"\u003eDocumentation requests after purchase\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003emelanotan 1 peptide — Technical Specifications (CAS 75921-69-6)\u003c\/h2\u003e\n\u003cdiv class=\"ps-grid\"\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ctable aria-label=\"Melanotan 1 specifications\" class=\"ps-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Name\u003c\/th\u003e\n\u003ctd\u003eMelanotan 1 (MT-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCAS Number\u003c\/th\u003e\n\u003ctd\u003e75921-69-6\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003ctd\u003eLyophilized white powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003cth\u003eDocumentation\u003c\/th\u003e\n\u003ctd\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eResearch Use Only (RUO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor reproducible research workflows, always reference the lot-specific CoA for identity, traceability, and analytical results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ch2 class=\"ps-h2\"\u003emelanotan 1 reconstitution — Lab preparation for assays (RUO, SOP-based)\u003c\/h2\u003e\n\u003cp\u003eFor \u003cstrong\u003emelanotan 1 reconstitution\u003c\/strong\u003e, labs typically use sterile technique and an assay-appropriate aqueous buffer selected for the protocol. Solvent choice, pH, and working concentration are defined by your study design and internal SOP.\u003c\/p\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest practice:\u003c\/strong\u003e prepare only what you need for short-term runs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAliquoting:\u003c\/strong\u003e helps reduce variability across repeated experiments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid:\u003c\/strong\u003e repeated freeze–thaw cycles after preparation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003emelanotan 1 vs 2 — What researchers compare in MT-1 vs MT-2 models\u003c\/h2\u003e\n\u003cp\u003eSearches for \u003cstrong\u003emelanotan 1 vs 2\u003c\/strong\u003e often reflect a comparison of peptide design and receptor-signaling behavior in experimental systems. In RUO research, the MT-1 vs MT-2 choice depends on your model, receptor focus, and the endpoints you plan to quantify.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003edifference between melanotan 1 and 2 — Research-context differences (no clinical claims)\u003c\/h2\u003e\n\u003cp\u003eWhen people ask the \u003cstrong\u003edifference between melanotan 1 and 2\u003c\/strong\u003e, they typically mean differences in peptide structure and observed signaling profiles in controlled models. This page is provided strictly for laboratory context and does not imply outcomes in humans.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003emelanotan 1 protocol — Handling \u0026amp; storage controls for consistent results (RUO)\u003c\/h2\u003e\n\u003cp\u003eA practical \u003cstrong\u003emelanotan 1 protocol\u003c\/strong\u003e in research settings focuses on consistency: record lot numbers, control temperature and light exposure, and follow a standardized SOP for preparation, labeling, and storage.\u003c\/p\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLyophilized storage:\u003c\/strong\u003e −20°C, dry, protected from light and moisture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepared solutions:\u003c\/strong\u003e treat as short-term per SOP; aliquot when possible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability:\u003c\/strong\u003e document lot, date, buffer system, and handling notes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ps-h2\"\u003emelanotan 1 for sale — Research Use and Batch Documentation\u003c\/h2\u003e\n\u003cp\u003eFor laboratory research procurement, review the RUO labeling and request item-specific documentation. Batch-specific documentation may be requested after purchase for manual verification.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003ebuy melanotan 1 — What to check before purchasing (RUO only)\u003c\/h2\u003e\n\u003cp\u003eFor teams looking to \u003cstrong\u003ebuy melanotan 1\u003c\/strong\u003e for laboratory research, key checkpoints are: RUO labeling, lot traceability, and clear documentation of purity\/identity testing. These steps help reduce experimental variability.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003eFrequently Asked Questions (FAQs) — Melanotan 1 (RUO)\u003c\/h2\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhat is melanotan 1 peptide (MT-1)?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eMelanotan 1 peptide\u003c\/strong\u003e is an α-MSH analog supplied for RUO laboratory research, commonly used to study melanocortin receptor signaling and pathway-level readouts in controlled models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eMelanotan 1 vs 2 — which one should researchers choose?\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003emelanotan 1 vs 2\u003c\/strong\u003e choice depends on your model system, receptor focus, and experimental endpoints. Both are discussed in research as distinct α-MSH-related peptides with different signaling profiles in controlled setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhat is the difference between melanotan 1 and 2?\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003edifference between melanotan 1 and 2\u003c\/strong\u003e is usually discussed in terms of peptide structure and observed behavior in experimental models. Always match selection to your assay design and readouts (RUO context only).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eHow do you handle melanotan 1 reconstitution for lab assays?\u003c\/div\u003e\n\u003cp\u003eFor \u003cstrong\u003emelanotan 1 reconstitution\u003c\/strong\u003e, use sterile technique and an assay-appropriate buffer defined by your SOP. Preparation details (pH, concentration, container type) are protocol-dependent and should be set by the lab.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eWhat should a melanotan 1 protocol include for consistent results?\u003c\/div\u003e\n\u003cp\u003eA \u003cstrong\u003emelanotan 1 protocol\u003c\/strong\u003e typically includes lot tracking, low-temperature storage, controlled light\/moisture exposure, and standardized preparation steps. Aliquoting helps minimize variability across repeated runs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-faq\"\u003e\n\u003cdiv class=\"q\"\u003eIs melanotan 1 for sale \/ buy melanotan 1 available with documentation?\u003c\/div\u003e\n\u003cp\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-disclaimer\"\u003e\n\u003cstrong\u003eWARNING — Research Use Only (RUO):\u003c\/strong\u003e\u003cbr\u003eFor laboratory research and development only. Not for human or veterinary use, injection, consumption, or cosmetic application. Not intended to diagnose, treat, cure, or prevent any disease. Any mention of mechanisms refers exclusively to controlled research models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"peptidesskin","offers":[{"title":"Default Title","offer_id":47079068238045,"sku":"PS-MELANOTAN-STD","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/7981\/8973\/files\/melanotan-1-peptidesskin-10mg.png?v=1764773096"},{"product_id":"pt-141","title":"PT-141 (Bremelanotide) MC3R \/ MC4R Cyclic Research Standard","description":"\u003cstyle\u003e\n  \/* Scoped styles (won't affect Shopify price\/sections) *\/\n  .ps-pt141{width:100%;max-width:100%}\n  .ps-pt141 .ps-card{\n    background:#0b1220;\n    border:1px solid #22304a;\n    border-radius:18px;\n    padding:18px;\n    color:#fff;\n  }\n  .ps-pt141 p,.ps-pt141 li,.ps-pt141 td,.ps-pt141 th{\n    color:#fff!important;\n    line-height:1.85;\n    font-size:15px;\n  }\n  .ps-pt141 p{margin:10px 0}\n  .ps-pt141 .ps-warning{\n    border-left:4px solid #d4af37;\n    padding:12px 14px;\n    background:rgba(212,175,55,.08);\n    border-radius:12px;\n    margin-bottom:14px;\n  }\n  .ps-pt141 .ps-h2{\n    font-size:18px;\n    margin:20px 0 10px;\n    color:#d4af37;\n    letter-spacing:.2px;\n  }\n  .ps-pt141 .ps-h2:after{\n    content:\"\";\n    display:block;\n    height:1px;\n    margin-top:8px;\n    background:rgba(212,175,55,.35);\n    width:85%;\n  }\n  .ps-pt141 .ps-h3{font-size:15px;margin:14px 0 8px;color:#f1e6b8}\n  .ps-pt141 .ps-list{margin:10px 0 0 18px;padding:0}\n  .ps-pt141 .ps-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:12px}\n  .ps-pt141 .ps-box{\n    border:1px solid #22304a;\n    border-radius:14px;\n    padding:14px;\n    background:rgba(255,255,255,.03);\n  }\n  .ps-pt141 .ps-table{width:100%;border-collapse:collapse;margin-top:10px}\n  .ps-pt141 .ps-table th,.ps-pt141 .ps-table td{\n    border-bottom:1px solid #22304a;\n    padding:10px 8px;\n    text-align:left;\n    vertical-align:top;\n  }\n  .ps-pt141 .ps-table th{font-size:13px;font-weight:700;width:42%}\n  .ps-pt141 .ps-table td{font-size:14px}\n  .ps-pt141 details.ps-faq{\n    border:1px solid #22304a;\n    border-radius:14px;\n    padding:12px 14px;\n    background:rgba(255,255,255,.03);\n    margin-top:12px;\n  }\n  .ps-pt141 details.ps-faq summary{\n    cursor:default;\n    list-style:none;\n    font-weight:800;\n    color:#d4af37;\n    outline:none;\n  }\n  .ps-pt141 details.ps-faq summary::-webkit-details-marker{display:none}\n  .ps-pt141 .ps-disclaimer{\n    margin-top:16px;\n    padding:12px 14px;\n    border-radius:14px;\n    background:rgba(255,90,90,.08);\n    border:1px solid rgba(255,90,90,.22);\n    font-size:13px;\n    line-height:1.75;\n    color:#fff!important;\n  }\n  @media (min-width: 900px){ .ps-pt141 .ps-grid{grid-template-columns:1.2fr .8fr} }\n  @media (max-width:520px){\n    .ps-pt141 .ps-card{padding:14px}\n    .ps-pt141 p,.ps-pt141 li{font-size:14px}\n    .ps-pt141 .ps-h2:after{width:92%}\n  }\n\u003c\/style\u003e\n\u003csection class=\"ps-pt141\"\u003e\n\u003cdiv class=\"ps-card\"\u003e\n\u003cdiv class=\"ps-warning\"\u003e\n\u003cstrong\u003e⚠ Research Use Only (RUO):\u003c\/strong\u003e \u003cstrong\u003ePT-141 peptide (Bremelanotide)\u003c\/strong\u003e is supplied exclusively for in-vitro and non-clinical laboratory research. Not for human or veterinary use, not for injection, not for consumption.\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 Peptide (Bremelanotide) — Research Use Only (RUO) Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePT-141\u003c\/strong\u003e, commonly referenced as \u003cstrong\u003ebremelanotide peptide\u003c\/strong\u003e, is a synthetic \u003cstrong\u003emelanocortin receptor agonist\u003c\/strong\u003e used in controlled research workflows to investigate receptor-mediated signaling and downstream pathway readouts in non-clinical models. This page provides laboratory context only and does not imply clinical outcomes.\u003c\/p\u003e\n\u003cdiv class=\"ps-grid\"\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 (Bremelanotide) Specifications — CAS 189691-06-3\u003c\/h2\u003e\n\u003ctable aria-label=\"PT-141 specifications\" class=\"ps-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Name\u003c\/th\u003e\n\u003ctd\u003ePT-141 (Bremelanotide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCAS Number\u003c\/th\u003e\n\u003ctd\u003e189691-06-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMolecular Formula\u003c\/th\u003e\n\u003ctd\u003eC\u003csub\u003e50\u003c\/sub\u003eH\u003csub\u003e68\u003c\/sub\u003eN\u003csub\u003e14\u003c\/sub\u003eO\u003csub\u003e10\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMolecular Weight\u003c\/th\u003e\n\u003ctd\u003e~1025.2 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePeptide Type\u003c\/th\u003e\n\u003ctd\u003eCyclic melanocortin receptor research peptide\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\n\u003ctr\u003e\n\u003cth\u003ePhysical Form\u003c\/th\u003e\n\u003ctd\u003eLyophilized powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDocumentation\u003c\/th\u003e\n\u003ctd\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eResearch Use Only (RUO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ps-box\"\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 Keywords Embedded for Search Intent (USA)\u003c\/h2\u003e\n\u003cp\u003eCommon queries include \u003cstrong\u003ept-141 peptide\u003c\/strong\u003e, \u003cstrong\u003ebremelanotide\u003c\/strong\u003e, \u003cstrong\u003ept-141 bremelanotide\u003c\/strong\u003e, \u003cstrong\u003emelanocortin receptor agonist\u003c\/strong\u003e, \u003cstrong\u003eMC4R\u003c\/strong\u003e, \u003cstrong\u003eMC3R\u003c\/strong\u003e, \u003cstrong\u003ept-141 lyophilized powder\u003c\/strong\u003e, \u003cstrong\u003ept-141 storage\u003c\/strong\u003e, and \u003cstrong\u003ept-141 reconstitution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBelow, those terms are addressed naturally through RUO-safe technical sections and FAQs (no medical claims).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"ps-h2\"\u003eWhat Is PT-141 (Bremelanotide)? Melanocortin Receptor Research Peptide\u003c\/h2\u003e\n\u003cp\u003eIn research literature, \u003cstrong\u003ebremelanotide (PT-141)\u003c\/strong\u003e is discussed as a melanocortin-pathway probe, often evaluated for activity across melanocortin receptor subtypes (commonly referenced in CNS signaling models). Researchers use PT-141 to explore receptor binding, cAMP signaling, and pathway-level modulation under defined experimental conditions.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 Mechanism of Action in MC4R \/ MC3R Signaling Models (Research Context)\u003c\/h2\u003e\n\u003cp\u003ePT-141 is widely referenced for melanocortin receptor pathway investigation, supporting assays that quantify receptor activation and downstream signaling readouts (e.g., cAMP-linked responses) in controlled in-vitro systems. Experimental design, receptor subtype selection, and endpoints are protocol-dependent.\u003c\/p\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 Research Applications: Receptor Binding, CNS Pathways, and Autonomic Readouts\u003c\/h2\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMelanocortin receptor binding assays:\u003c\/strong\u003e receptor affinity\/activation profiling in cell systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMC4R pathway mapping:\u003c\/strong\u003e downstream signaling cascade exploration in mechanistic workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeuroscience models:\u003c\/strong\u003e CNS-linked pathway studies focused on signaling and regulatory circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComparative peptide research:\u003c\/strong\u003e contrast vs. other melanocortin-pathway peptides (protocol-dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalytical\/QC workflows:\u003c\/strong\u003e identity\/purity checks and reproducibility tracking in lab environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ps-h2\"\u003ePT-141 Storage and Handling: Lyophilized Peptide Powder + Reconstitution (RUO)\u003c\/h2\u003e\n\u003cp\u003eFor \u003cstrong\u003ept-141 storage\u003c\/strong\u003e and preparation in RUO workflows, follow your laboratory SOP and the product documentation. Many labs store lyophilized peptides cold, protected from light and moisture, and prepare solutions only as needed for assays.\u003c\/p\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLyophilized PT-141:\u003c\/strong\u003e store at −20°C or below, protected from light\/moisture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter preparation:\u003c\/strong\u003e use within your protocol stability window (solvent\/time are assay-dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest practice:\u003c\/strong\u003e aliquot where appropriate; avoid repeated freeze–thaw cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ps-h2\"\u003eWhy Researchers Choose Peptides Skin for PT-141 (Bremelanotide) RUO Supply\u003c\/h2\u003e\n\u003cul class=\"ps-list\"\u003e\n\u003cli\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCoA availability:\u003c\/strong\u003e documentation for qualified research buyers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure shipping:\u003c\/strong\u003e packaging optimized for stability during transit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"ps-h2\"\u003eFAQs — PT-141 Peptide (Bremelanotide) Research Use Only\u003c\/h2\u003e\n\u003cdetails class=\"ps-faq\" open=\"\"\u003e\n\u003csummary\u003eWhat is PT-141 peptide (bremelanotide) in research?\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003ePT-141 (bremelanotide)\u003c\/strong\u003e is a melanocortin-pathway research peptide used in non-clinical workflows to study receptor signaling (e.g., MC4R\/MC3R) and downstream mechanistic readouts in controlled systems.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"ps-faq\" open=\"\"\u003e\n\u003csummary\u003eIs PT-141 from Peptides Skin approved for human use?\u003c\/summary\u003e\n\u003cp\u003eNo. Peptides Skin supplies PT-141 strictly as \u003cstrong\u003eResearch Use Only (RUO)\u003c\/strong\u003e. It is not intended or approved for human or veterinary use, injection, or consumption.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"ps-faq\" open=\"\"\u003e\n\u003csummary\u003eWhat are the CAS number and molecular weight of PT-141?\u003c\/summary\u003e\n\u003cp\u003eCommon references list \u003cstrong\u003eCAS 189691-06-3\u003c\/strong\u003e and a molecular weight of approximately \u003cstrong\u003e~1025.2 g\/mol\u003c\/strong\u003e for bremelanotide (PT-141). Always verify against batch documentation for your laboratory records.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"ps-faq\" open=\"\"\u003e\n\u003csummary\u003eHow should PT-141 lyophilized powder be stored?\u003c\/summary\u003e\n\u003cp\u003eStore lyophilized PT-141 at \u003cstrong\u003e−20°C or below\u003c\/strong\u003e, protected from light and moisture. Follow your SOP and minimize freeze–thaw cycles to reduce experimental variability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"ps-faq\" open=\"\"\u003e\n\u003csummary\u003eHow can I request batch documentation for PT-141?\u003c\/summary\u003e\n\u003cp\u003eBatch-specific documentation may be requested after purchase for manual verification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv class=\"ps-disclaimer\"\u003e\n\u003cstrong\u003eWARNING — Research Use Only (RUO):\u003c\/strong\u003e\u003cbr\u003eFor laboratory research and development purposes only. Not for human or veterinary use, injection, or consumption. Not intended to diagnose, treat, cure, or prevent any disease. Any mention of mechanisms refers exclusively to controlled research models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"peptidesskin","offers":[{"title":"Default Title","offer_id":47079068532957,"sku":"PS-PT1-STD","price":49.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/7981\/8973\/files\/pt-141-peptidesksin-10mg_ee3cd846-e3c6-415f-99d0-958fa675512a.png?v=1764773214"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/7981\/8973\/collections\/minimal-melanocortin-pathway-banner--stylized-rec_1000px_nano.webp?v=1771070391","url":"https:\/\/peptidesskin.com\/collections\/melanocortin-pathway-research.oembed","provider":"peptidesskin","version":"1.0","type":"link"}