PT-141: Complete Research Guide for Laboratory Use

PT-141 (Bremelanotide) is a synthetic 7-amino-acid cyclic analog of α-MSH and a non-selective agonist of the melanocortin receptors, with notable activity at MC3R and MC4R. It is studied in research models of central nervous system signaling and melanocortin pharmacology. For research teams sourcing PT-141, the most important variables are sequence fidelity, residual solvents, endotoxin load, and traceable batch documentation. Every vial of PT-141 supplied by Quality Peptide USA is American-synthesized, lot-controlled, and released only after independent HPLC-MS and LAL verification.

PT-141 is referenced across Melanocortin receptor pharmacology, CNS signaling research and adjacent investigative domains. As triple-receptor and dual-agonist research peptides expand the pharmacological toolbox, PT-141 continues to serve as a reference compound in comparative assays. Investigators routinely pair it with companion peptides from the Glow stack, Wolverine stack, or GHRH/GHRP secretagogue blends depending on study design.

Reconstitute PT-141 under sterile technique with bacteriostatic water (0.9% benzyl alcohol). Lyophilized vials remain stable refrigerated at 2–8°C; reconstituted aliquots should follow the storage window listed on the product page. Avoid freeze/thaw cycling, exposure to UV light, or contact with reactive metals. For prolonged storage, single-use aliquots in low-binding tubes at −20°C preserve sequence integrity.

Every batch of PT-141 passes RP-HPLC (≥ 99% purity threshold), ESI mass spectrometry confirmation, Karl Fischer water content, and a Limulus Amebocyte Lysate endotoxin screen below 0.10 EU/mg. Certificates of analysis are published with every order — no email request required.

American-synthesized research peptides eliminate the customs delays, opaque batch chains, and inconsistent cold-chain handling associated with overseas suppliers. Quality Peptide USA synthesizes, lyophilizes, and ships PT-141 from domestic facilities, with cold-pack dispatch on every order placed before the 2 PM EST cut-off.