PT-141, also named Bremelanotide (acetate CAS: 1607799-13-2), is a synthetic cyclic heptapeptide analog of endogenous α-Melanocyte-Stimulating Hormone (α-MSH), structurally optimized from Melanotan II with reduced pigmentation side effects and improved molecular stability.
Presented as white lyophilized powder with HPLC purity ≥99%, it crosses the blood-brain barrier to selectively agonize central melanocortin receptors MC4R and MC3R, with mild activity on MC1R.
Main laboratory research fields:
- Central nervous system sexual behavior research: Targets medial preoptic area of hypothalamus to boost dopamine secretion, widely applied in preclinical studies on sexual arousal and hypoactive sexual desire disorder. Different from peripheral vasodilators like sildenafil, it modulates central motivational signaling rather than peripheral blood vessels.
- Metabolism & feeding regulation: Investigates appetite control, body weight balance and insulin resistance via MC4R signaling pathway.
- Anti-inflammation & ischemia injury repair: Suppresses pro-inflammatory cytokines to relieve neuroinflammation and organ reperfusion damage.
- Neuroendocrine crosstalk: Explores interactions between melanocortin system and dopamine, serotonin and HPA axis.
Each vial is individually vacuum freeze-dried and hermetically sealed under sterile conditions to avoid oxidative deactivation without extra excipients. Trial orders and bulk factory direct delivery are available.

Classification | Biochemical Reagents | Grade | AR |
Specific Usage | for Research | Content | 99% |
Usage | Laboratory Reagents | Source | Extract Natural Things |
Habit Appellation | Chemical Medicine | Application | Scientific Research |
Property | Organic Reagent | Transport Package | Vial |
Specification | 5mg, 10mg, 15mg etc. | Trademark | Wantewan |
Origin | China | —— | —— |
Project | Contents |
Product Name | Peptides |
Appearance | White Fine Powder |
Purity | >99.0% |
Storage | After reconstitution store at 2°C - 8°C, well-closed containers |






Q1: What's your MOQ?
A:For the regular produced products, our MOQ is 1box, for other customized products, our MOQ starts from 10boxes to 50boxes.
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A:We have inspection report.
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