PT-141 (bremelanotide) is a synthetic peptide analogue of alpha-melanocyte-stimulating hormone (α-MSH) that acts on melanocortin receptors, particularly MC3R and MC4R, in the central nervous system. PT-141 operates via a unique mechanism distinct from peripheral-acting agents like phosphodiesterase type 5 (PDE5) inhibitors. This action is believed to stimulate sexual arousal and desire by activating neurons in the hypothalamus, a key area involved in sexual function. Peptide Information Peptide Sequence: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH Molecular Formula: C50H68N14O10 Molecular Weight: 1025.2 g/mol CAS Number: 189691-06-3 PubChem CID: 9941379 Synonyms: Bremelanotide, 189691-06-3, PT-141, UNII-6Y24O4F92S, Bremelanotida PT-141 (Bremelanotide) Structure Source: PubChem Lyophilized Peptides: These peptides are freeze-dried, a process that not only extends shelf life but also preserves the purity and integrity of the peptides during storage. We do not use any fillers in this process. Product Usage: This PRODUCT IS INTENDED AS A RESEARCH CHEMICAL ONLY. This designation allows the use of research chemicals strictly for in vitro testing and laboratory experimentation only. All product information available on this website is for educational purposes only. This product should only be handled by licensed, qualified professionals. This product is not a drug, food, or cosmetic and may not be misbranded, misused or mislabeled as a drug.