MC3R Antagonist

Nonapeptide-1 (Melanostatine-5) acetate salt, a peptide hormone, is a selective antagonist of MC1R (K_i: 40 nM). Nonapeptide-1 acetate salt is a competitive α-MSH antagonist that potently inhibits intracellular cAMP and melanosome dispersion induced by α-MSH in melanocytes (IC₅₀: 2.5 nM and 11 nM, respectively). Nonapeptide-1 acetate salt inhibits melanin synthesis, and can be used in the research of skin pigmentation and regulation of steroid production in the adrenal gland, skin cancer.

Nonapeptide-1 (Melanostatine-5), a peptide hormone, is a selective antagonist of MC1R (K_i: 40 nM). Nonapeptide-1 is a competitive α-MSH antagonist that potently inhibits intracellular cAMP and melanosome dispersion induced by α-MSH in melanocytes (IC₅₀: 2.5 nM and 11 nM, respectively). Nonapeptide-1 inhibits melanin synthesis, and can be used in the research of skin pigmentation and regulation of steroid production in the adrenal gland, skin cancer.

PG106 TFA is a potent and selective human melanocortin 3 (hMC3) receptor antagonist (IC₅₀= 210 nM) and has noactivity at hMC4 receptors (EC₅₀=9900 nM) and hMC5 receptor.

Ac-c-Pro-Pro-Lys-Asp-NH2 is a selective human melanocortin 5 receptor (hMC5R) antagonist with an IC₅₀ of 10 nM.