Molecular Characteristics
Complete Specifications
-
CAS Registry Number: 32780-32-8
-
PubChem CID: 5311054
-
Peptide Classification: Synthetic cyclic melanocortin receptor agonist peptide
-
Molecular Formula: C₅₀H₆₈N₁₄O₁₀
-
Molecular Weight: ~1,025.2 Da
Structural Composition
-
Amino Acid Sequence:
Ac-Nle-cyclo(Asp-His-D-Phe-Arg-Trp-Lys)-NH₂ -
Length: 7 amino acids (cyclic, modified)
Physical Properties
-
Appearance: White to off-white lyophilized powder
-
Solubility: Water, bacteriostatic water, buffered aqueous solutions (e.g., PBS)
Structural & Stability Notes
PT-141 (Bremelanotide) is a synthetic cyclic peptide derived from melanotan II and functions as a melanocortin receptor agonist. Cyclization between aspartic acid and lysine residues enhances conformational stability and resistance to enzymatic degradation compared to linear peptides. Structural modifications including norleucine substitution and D-phenylalanine incorporation contribute to increased stability under controlled research conditions. Lyophilized storage and protection from moisture, light exposure, and repeated freeze–thaw cycles help preserve peptide integrity and maintain analytical consistency during laboratory applications.





Reviews
There are no reviews yet.