acth (1 4)

Acth (1-4) is the ACTH N-terminal tetrapeptide.

Acth (1-4) acetate is the ACTH N-terminal tetrapeptide.

(p-Iodo-Phe7)-ACTH (4-10), a derivative of adrenocorticotrophic hormone (ACTH) produced by the anterior pituitary gland, functions as a melanocortin (MC) receptor antagonist and effectively inhibits α-melanocyte-stimulating hormone (α-MSH)-induced excessive grooming behavior in rats [1].

Acetyl-ACTH (4-24) (human, bovine, rat), a proopiomelanocortin (POMC) peptide fragment, functions as an agonist at the MC-1 receptor [1]. This compound encompasses a sequence present in adrenocorticotrophin (ACTH), the precursor for α-MSH, illustrating its significant role in the POMC peptide family.

Tyr-ACTH(4-9) is a behaviorally active peptide utilized in research on learned behavior extinction in rats [1].

Stressin I (Cyclo(31-34)[DPhe12, Nle21, 38, Glu31, Lys34]Ac-hCRF(4-41)) TFA, with a K i of 1.7 nM, is a potent and selective agonist of the CRF1 receptor that elevates adrenocorticotropic hormone (ACTH) levels in rats [1].