Lipotropin (adrenokortikotropin, beta-lipotropin, alfa-melanocit stimulišući hormon, beta-melanocit stimulišući hormon, beta-endorfin) je hormon koji se formira prsecanjem proopiomelanokortina (POMC). Anteriorna hipofiza proizvodi prohormon POMC, koji podleže presecanju do adrenokortikotropina (ACTH) i β-lipotropina (β-LPH).
↑Joachim Spiess, Charles D. Mount, Wendell E. Nicholson, David N. Orth (1982), „NH2-Terminal amino acid sequence and peptide mapping of purified human β-lipotropin: Comparison with previously proposed sequences”, Proc. Natl. Acad. Sci. USA79 (16): 5071–5, Bibcode1982PNAS...79.5071S, DOI:10.1073/pnas.79.16.5071, PMC346829, PMID6956916