CW
Retatrutide purity was outstanding
Running metabolic assays with Retatrutide. Lot had >99% purity by reverse-phase HPLC — above spec. Mass spec confirmed molecular weight. Best peptide supplier we've worked with.
HPLC Verified
>98% Purity
COA Included
APEX Performance & Metabolic
PT-141
$48.52
PT-141 (Bremelanotide) is a cyclic heptapeptide melanocortin receptor agonist approved by the FDA as Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women. It acts centrally via MC3R/MC4R, distinct from PDE5 inhibitor mechanisms.
| Format | Lyophilized Vial |
|---|---|
| Dosage | 10mg |
| Purity | >98% |
| Sub-Line | APEX |
In Stock — Overnight and 2–3 day delivery available
Product Information
PT-141 | Bremelanotide Melanocortin Agonist — Research Grade
PT-141 (Bremelanotide) is a cyclic heptapeptide analogue of alpha-MSH and the first melanocortin-based compound to receive FDA approval for sexual dysfunction. Approved as Vyleesi in June 2019 for HSDD in premenopausal women, it provides a uniquely strong clinical evidence base for research use.
Mechanism of Action
- MC3R/MC4R agonism — activates hypothalamic melanocortin receptors involved in sexual arousal circuitry
- Central (not peripheral) action — works upstream of the vascular events targeted by PDE5 inhibitors, offering a complementary research tool
- No cardiovascular dependency — does not require nitric oxide/cGMP pathway intact (relevant in diabetic neuropathy models)
Research Areas
PT-141 is studied in male and female sexual dysfunction, melanocortin neurocircuitry, obesity (MC4R), and inflammatory pain. Phase III RECONNECT trial (n=1,267) demonstrated significant HSDD improvement vs placebo.
For Research Use Only. Rainbow Peptide supplies PT-141 exclusively for in vitro and laboratory research purposes. Not for human or veterinary use.
Frequently Asked Questions
- What is PT-141?
- PT-141 (Bremelanotide) is a cyclic heptapeptide melanocortin receptor agonist approved by the FDA as Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women. It acts centrally via MC3R/MC4R, distinct from PDE5 inhibitor mechanisms.
- Is PT-141 for sale at Rainbow Peptide?
- Yes. PT-141 is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your PT-141?
- Rainbow Peptide's PT-141 is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is PT-141 safe for human use?
- No. PT-141 is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does PT-141 ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of PT-141 is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product PT-141
Lot # RP-00027-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews DP
Ipamorelin quality confirmed via QC
Internal verification confirmed COA data. Purity was 98.6% HPLC. Peptide behavior in our assay was consistent with published data. Will order again for next study phase.
BS
Consistent performance for research
AOD-9604 arrived quickly and in excellent condition. Cold pack preserved temperature. COA was thorough. Results in metabolic assays consistent with expected parameters.
