Source comparison
PT-141 Quality Real vs Fake: Comparison
The table below contrasts authentic research-grade PT-141 against common counterfeit characteristics observed in independent laboratory testing. Each criterion reflects verifiable markers used in forensic peptide analysis. HPLC Purity ≥98% bremelanotide 65–85%
This comparison does not assign a generated winner or score.
- The table below contrasts authentic research-grade PT-141 against common counterfeit characteristics observed in independent laboratory testing. Each criterion reflects verifiable markers used in forensic peptide analysis.
- HPLC Purity
- ≥98% bremelanotide
- 65–85% or undetectable
- Reverse-phase HPLC with UV detection at 220nm
- Purity <95% indicates dilution, degradation, or substituted compounds
- Molecular Weight (MS)
- 1,025.18 Da (±0.5 Da)
- 1,015–1,060 Da or no match
- Electrospray ionization mass spectrometry (ESI-MS)
- Molecular weight deviation >2 Da confirms incorrect amino acid sequence
- Reconstitution Clarity
- Clear-to-slightly-opalescent, no particulates
- Cloudy, visible aggregates, incomplete dissolution
- Visual inspection + turbidity measurement
- Cloudiness indicates poor synthesis quality or filler excipients
- Amino Acid Ratio
- Exact molar ratios for Asp-His-Phe-Arg-Trp-Lys-Nle
- Deviations >5% from theoretical values
- Amino acid analysis (AAA) via ion-exchange chromatography
- AAA is the definitive sequence verification—visual inspection cannot detect substitutions
- Third-Party CoA
- Batch-specific HPLC, MS, endotoxin, sterility
- Generic CoA with no batch number or forged results
- Independent laboratory verification
- Vendor-conducted testing alone is insufficient—conflict of interest invalidates claims
- Price per 10mg Vial
- $85–$150 (GMP-compliant synthesis)
- $30–$50 (grey-market sourcing)
- Market analysis
- Pricing below synthesis cost floor indicates quality compromise