{"product_id":"pt-141","title":"PT-141 10mg","description":"\u003cp\u003ePT-141 (bremelanotide) is a synthetic cyclic heptapeptide analogue of alpha-MSH that acts as a melanocortin receptor agonist. It is used as a reference compound in receptor-binding research and is supplied as a lyophilised powder in a 10mg vial.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound:\u003c\/strong\u003e PT-141 (bremelanotide acetate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence:\u003c\/strong\u003e Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular formula:\u003c\/strong\u003e C50H68N14O10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight:\u003c\/strong\u003e 1025.20 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number:\u003c\/strong\u003e 1607799-13-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e White lyophilised powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack:\u003c\/strong\u003e 10mg in a sealed glass vial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Store at 2–8°C, or at −20°C for long-term storage, sealed, dry and away from light\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eResearch context\u003c\/h3\u003e\u003cp\u003ePT-141 is a metabolite of Melanotan II and binds melanocortin receptors, chiefly MC3R and MC4R. It is used in research on melanocortin receptor pharmacology and central melanocortin signalling, and as a comparison compound for other α-MSH analogues.\u003c\/p\u003e\u003ch3\u003eQuality and testing\u003c\/h3\u003e\u003cp\u003eEach batch comes with the manufacturer's certificate of analysis. This batch (certificate 026-P85-TSX) tested at 99.26% purity by HPLC, with identity confirmed by mass spectrometry and a peptide content of 86.3%. The full lab results are shown below, with the certificate to download.\u003c\/p\u003e\u003ch3\u003eDelivery\u003c\/h3\u003e\u003cp\u003eOrders ship by Royal Mail: Tracked 48 (£3.99), Tracked 24 (£4.99) or Special Delivery guaranteed by 1pm (£10.99), with free Tracked 48 on UK orders of £100 or more. Mix and match any peptides for bulk savings: 10% off 3 vials, 15% off 5 and 20% off 10.\u003c\/p\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat purity is this batch?\u003c\/strong\u003e\u003cbr\u003eThe current batch of PT-141 tested at 99.26% by HPLC, with identity confirmed by mass spectrometry. The full certificate of analysis, number 026-P85-TSX, is shown below and can be downloaded.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs PT-141 a cyclic peptide?\u003c\/strong\u003e\u003cbr\u003eYes. Part of its sequence is joined into a ring through a lactam bridge, which makes it more stable than a linear α-MSH fragment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow should it be stored?\u003c\/strong\u003e\u003cbr\u003eKeep the sealed vial at 2–8°C for short-term storage or at −20°C for long-term storage, away from light and moisture. Let a cold vial reach room temperature before opening it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same as PT141?\u003c\/strong\u003e\u003cbr\u003eYes. PT-141 is also written or searched for as PT141, PT 141, bremelanotide or PT-141 peptide. All of these names refer to this melanocortin agonist.\u003c\/p\u003e\u003cp\u003eSee more in \u003ca href=\"\/collections\/melanocortin-copper-peptides\"\u003emelanocortin and copper peptides\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFor laboratory research use only.\u003c\/strong\u003e Not a medicine. Not for human or veterinary use, and not for use in food, drugs, cosmetics or household products. Sold to qualified researchers who confirm research use at checkout.\u003c\/p\u003e","brand":"Absolute Peptides","offers":[{"title":"10mg","offer_id":55329809563975,"sku":"AP-PT141-10","price":22.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1014\/3806\/2919\/files\/absolute-peptides-pt-141.png?v=1791987937","url":"https:\/\/absolutepeptides.uk\/products\/pt-141","provider":"Absolute Peptides","version":"1.0","type":"link"}