A tetradecapeptide originally obtained from the skins of toads Bombina bombina and B. variegata. It is also an endogenous neurotransmitter in many animals including mammals. Bombesin affects vascular and other smooth muscle, gastric secretion, and renal circulation and function.

Synonyms: Bombesin, Dihydrochloride, Bombesin, 33910-70-2, 5-oxoPro-Gln-Arg-Leu-Gly-Asn-Gln-Trp-Ala-Val-Gly-His-Leu-MetNH2, Bombesin Dihydrochloride, PX9AZU7QPK, Bombesin 14