Source comparison
PT-141 Real vs Fake: Comparison
This table compares the defining characteristics of authentic research-grade PT-141 against common counterfeit indicators based on laboratory analysis of suspect samples. Visual Appearance White to off-white crystalline cake, uniform texture Loose powder, disc
This comparison does not assign a generated winner or score.
- This table compares the defining characteristics of authentic research-grade PT-141 against common counterfeit indicators based on laboratory analysis of suspect samples.
- Visual Appearance
- White to off-white crystalline cake, uniform texture
- Loose powder, discolored (yellow/brown), inconsistent texture
- Direct visual inspection under magnification
- Counterfeit powder often shows oxidation or filler contamination visible to the naked eye
- Reconstitution Time
- Complete dissolution in 60–90 seconds, crystal-clear solution
- Incomplete dissolution, cloudiness, visible particles, requires extended mixing
- Timed reconstitution with bacteriostatic water
- Authentic bremelanotide's solubility profile is difficult to replicate with filler compounds
- pH Stability
- 6.5–7.5 range, stable for 28 days refrigerated
- pH <6.0 or >8.0, often drifts over 48 hours
- pH strip testing (0.1 precision)
- Physiological pH range is mandatory for injection safety. Deviations indicate contamination
- COA Documentation
- Third-party lab HPLC/MS, includes lab accreditation, lot traceability, endotoxin <1.0 EU/mg
- Generic 'purity certificate', no lab contact info, missing endotoxin data
- Contact listed lab to verify batch report
- Fabricated COAs never include endotoxin testing or detailed analytical methodology
- Purity Level
- ≥98% by HPLC, molecular weight 1025.2 g/mol confirmed by mass spec
- <90% purity, wrong molecular weight, or undetectable bremelanotide
- Independent third-party HPLC/MS testing
- Purity below 98% means the product contains significant filler or degradation products
- Packaging Integrity
- Cold-chain shipping, pharmaceutical-grade vial, crimped seal, printed label
- Ambient temperature shipping, low-quality vials, handwritten labels
- Shipping documentation and vial inspection
- Temperature excursions during shipping denature peptide structure irreversibly