Reproductive / hormonal research
PT-141
CAS 189691-06-3
Molecular data
- CAS number
- 189691-06-3
- Mol. formula
- C50H68N14O10
- Mol. weight
- 1025.18 g/mol
- Sequence
- Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
- Purity
- ≥ 99.0%
- Lot number
- Assigned at shipment
Certificate of Analysis
Independent third-party verified
- Purity (HPLC)
- 99.76%
- Batch
- 00011/0011
- Laboratory
- AV Analytics
- Analyzed
- Sep 3, 2026
Summary
CAS 189691-06-3 · 1025.18 g/mol · ≥99% by HPLC · from $43
Cyclic heptapeptide melanocortin agonist studied in libido and sexual-physiology research.
Read the full PT-141 compound profile — mechanism, published research, and references →
Research context
Diamond et al., J Sex Med (2006).
More in Sexual Wellness
Published research
Primary literature on this compound — trial design, endpoints and limitations. Summaries, not recommendations.
- Bremelanotide for the Treatment of Hypoactive Sexual Desire Disorder: Two Randomized Phase 3 TrialsObstet Gynecol · 2019
- Long-Term Safety and Efficacy of Bremelanotide for Hypoactive Sexual Desire DisorderObstet Gynecol · 2019
- Double-blind, placebo-controlled evaluation of the safety, pharmacokinetic properties and pharmacodynamic effects of intranasal PT-141, a melanocortin receptor agonist, in healthy males and patients with mild-to-moderate erectile dysfunctionInt J Impot Res · 2004
- Evaluation of the safety, pharmacokinetics and pharmacodynamic effects of subcutaneously administered PT-141, a melanocortin receptor agonist, in healthy male subjects and in patients with an inadequate response to ViagraInt J Impot Res · 2004
About PT-141
- What is PT-141?
- Cyclic heptapeptide melanocortin agonist studied in libido and sexual-physiology research.
- What is the CAS number for PT-141?
- PT-141 is registered under CAS Registry Number 189691-06-3.
- What is the molecular formula of PT-141?
- The molecular formula of PT-141 is C50H68N14O10, with a molecular weight of 1025.18 g/mol.
- What research context is PT-141 studied in?
- Diamond et al., J Sex Med (2006).
- What's included with each PT-141 lot?
- Every lot of PT-141 ships with a per-lot Certificate of Analysis (COA) from an independent US laboratory documenting ≥99.0% purity by HPLC and mass-spectrometry identity confirmation. The COA is QR-linked from the vial label.
- How is PT-141 verified?
- Each lot of PT-141 is independently verified at Chromate.org, a US analytical laboratory, with HPLC purity, mass-spectrometry identity, and heavy-metal screening. The per-lot Certificate of Analysis is published on this page and ships printed in every package.
- How is PT-141 stored?
- Lyophilized PT-141 is shipped at ambient temperature in protective packaging. For long-term laboratory storage, refer to the per-lot Certificate of Analysis storage notes specific to the lot you receive.
- Is PT-141 approved for human or veterinary use?
- No. This product is for laboratory research use only. Not for human or veterinary use. Not a drug, supplement, or medical device. Customers certify research use at checkout per our Terms of Sale.
Research use only
This product is for laboratory research use only. Not for human or veterinary use. Not a drug, supplement, or medical device. By purchasing, customer certifies research use per our Terms of Sale.