1. Core Product Specifications

Product Name: PT141
Generic Name: Bremelanotide
CAS No.: 189691-06-3 (Free acid form); 1607799-13-2 (Bremelanotide Acetate, mainstream research grade)
Peptide Type: Synthetic cyclic melanocortin peptide, MC4R selective agonist
Amino Acid Sequence: cyclo(-Asp-His-D-Phe-Arg-Trp-Lys-)
Molecular Formula: C??H??N??O?? (Calculated based on free acid form)
Molecular Weight: 1025.16 Da
Appearance: White to off-white lyophilized crystalline powder, odorless, non-caking, uniform color and high purity
Purity: ≥98.0% (HPLC tested, pharmaceutical & research grade)
Form: Free acid / Acetate salt (acetate form is more common for better stability)
Moisture Content: ≤2.0%
Heavy Metals: ≤10ppm
Endotoxin: ≤0.1EU/mg
Residue on Ignition: ≤0.1%
Solubility: Freely soluble in pure water and aqueous buffer solutions, clear and stable solution without precipitation
Transport Condition: Room temperature light-proof transportation
Storage Condition: Long-term storage of dry powder at -20℃ sealed, dry and dark; aliquot liquid solution and store at -20℃, strictly avoid repeated freeze-thaw cycles
Production Technology: Standard solid-phase peptide synthesis (SPPS), precise cyclization modification, multi-stage high-precision HPLC purification, low-temperature vacuum freeze-drying technology
Core Bioactivity: Selective MC4R agonist, neuroendocrine regulation, sexual function modulation, energy metabolism regulation
Shelf Life: 24 months under standard -20℃ sealed and dry storage conditions
Usage Restriction: For scientific research and preclinical drug development only, not for human clinical diagnosis or treatment