SML2756

Bremelanotide acetate

≥98% (HPLC)

• Synonym(s): Ac-Nle-Asp-His-D-Phe-Arg-Trp-Lys (Asp-Lys), acetate salt, Acetyl-[Nle4, Asp5, D-Phe7, Lys10]-cyclo-α-melanocyte, PT 141 acetate, PT-141 acetate, PT141 acetate
• Empirical Formula (Hill Notation): C₅₀H₆₈N₁₄O₁₀ · xC₂H₄O₂
• CAS Number: 1607799-13-2
• Molecular Weight: 1025.16 (free base basis)
• UNSPSC Code: 12352200
• NACRES: NA.77
• Assay: ≥98% (HPLC)
• Form: powder
• Storage condition: desiccated

Properties

• Quality Segment: 100
• assay: ≥98% (HPLC)
• form: powder
• storage condition: desiccated
• color: white to off-white
• shipped in: wet ice
• storage temp.: −20°C
• SMILES string: [nH]1cncc1C[C@@H]2NC(=O)[C@H](CC(=O)NCCCC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H](NC2=O)Cc5ccccc5)CCCN=C(N)N)Cc3c4c([nH]c3)cccc4)C(=O)O)NC(=O)[C@@H](NC(=O)C)CCCC.OC(=O)C
• InChI: 1S/C50H68N14O10.C2H4O2/c1-3-4-16-35(58-29(2)65)43(67)64-41-25-42(66)54-20-11-10-18-37(49(73)74)60-46(70)39(23-31-26-56-34-17-9-8-15-33(31)34)62-44(68)36(19-12-21-55-50(51)52)59-45(69)38(22-30-13-6-5-7-14-30)61-47(71)40(63-48(41)72)24-32-27-53-28-57-32;1-2
• InChI key: MAYUSRUHXFWITM-GBRHMYBBSA-N

Description

Biochem/physiol Actions

Brain-penetrant alpha-melanocyte-stimulating hormone (α-MSH)-derived melanocortin receptors (MC1R, MC3R, MC4R) agonist with in vivo sexual arousal efficacy.

Bremelanotide (PT-141) is a brain-penetrant, alpha-melanocyte-stimulating hormone (α-MSH)-derived cyclic heptapeptide agonist toward melanocortin receptors, including MC1R, MC3R and MC4R (affinty = 10 nM by competitive binding against 0.2 nM NDP-α-MSH using human MC4R-expressing HEK-293). Bremelanotide induces cAMP accumulation in hMC4R-expressing HEK-293 cells and exhibits in vivo sexual arousal efficacy among both male (50 μg/kg intranasally or 50-500 pg/kg via lateral ventricle injection) and female rats (100-200 μg/kg sc or 800 μg/kg via lateral ventricle injection) by activating neurons in brain regions responsible for sexual function.

Safety Information

• Storage Class: 11 - Combustible Solids
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable