CAS Number: 7266-47-9 Molecular Weight: 2092.09 Salt Form: TFA Purity: >96% Sequence (3-letter): Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-Gly-Lys-Lys-Arg-OH Sequence (1-letter): SYSMEHFRWGKPVGKKR-OH Storage: -20 ?C or below ACTH (1-17) is the N-terminal fragment of Adrenocorticotropic Hormone (ACTH) which inhibits ACTH stimulated adenylate cyclase. ACTH (1-17), is a potent agonist of the human melanocortin 1 (MC1) receptor (Ki ~ 0.21 nM).