PT-141 Peptide (Bremelanotide)
PT-141, also written as PT141 or peptide 141, is the research designation for bremelanotide — a melanocortin-receptor agonist derived from the alpha-MSH analogue melanotan II. This page summarises the sequence, the research context, and the documentation supplied with each lot.
What PT-141 is
PT-141 is a cyclic heptapeptide and a metabolite of melanotan II. Unlike melanotan II, PT-141 lacks the C-terminal amide group associated with pigmentation activity, and research literature instead describes it as a non-selective melanocortin receptor agonist acting primarily at MC3R and MC4R in central nervous system research models.
Research context
Published work references PT-141 in central melanocortin signalling and behavioural research models. Amino Fuel Labs makes no therapeutic claims and supplies this compound strictly for laboratory research. It is not a medicine, not a supplement, and not for human consumption.
Purity and COA
Every PT-141 lot is verified by reverse-phase HPLC at a third-party analytical laboratory at 99%+ measured purity. The Certificate of Analysis documents identity, lot number, manufacture and retest dates, appearance, and purity, and can be viewed before or after ordering on our lab reports page.
Handling and shipping
PT-141 ships as a lyophilized powder in a sealed vial, stored per COA guidance and reconstituted with bacteriostatic water per your own protocol. Orders placed before the daily dispatch cutoff ship the same business day from the United States with tracking.
Related research pages
- Buy PT-141
- Kisspeptin
- Melanotan 2
- View COA / lab reports
- Research peptides for sale
- Peptide certificate of analysis
Frequently asked questions
Is PT-141 the same as bremelanotide?
Yes — bremelanotide is the compound name; PT-141, PT141, and peptide 141 are the research designations used by suppliers.
How does PT-141 differ from melanotan II?
PT-141 is a metabolite of melanotan II that lacks the C-terminal amide group associated with pigmentation activity in research models.
Is PT-141 third-party tested?
Yes — reverse-phase HPLC per lot with a COA included.
What vial size is supplied?
See the product page for current vial sizes and pricing.
Is PT-141 for research use only?
Yes — laboratory research only, not for human consumption.