(2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]-N-[(2S)-1-[(2-amino-2-oxoethyl)amino]-4-methyl-1-oxopentan-2-yl]pyrrolidine-2-carboxamide (2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxo-ethyl)-10-(3-amino-3-oxo-propyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-13-sec-butyl-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]-N-[(1S)-1-[(2-amino-2-oxo-ethyl)carbamoyl]-3-methyl-butyl]pyrrolidine-2-carboxamide (2S)-1-[[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-13-sec-butyl-1,2-dithia-5,8,11,14,17-pentazacycloicos-4-yl]-oxomethyl]-N-[(1S)-1-[[(2-amino-2-oxoethyl)amino]-oxomethyl]-3-methylbutyl]-2-pyrrolidinecarboxamide (2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-keto-ethyl)-10-(3-amino-3-keto-propyl)-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaketo-13-sec-butyl-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]-N-[(1S)-1-[(2-amino-2-keto-ethyl)carbamoyl]-3-methyl-butyl]pyrrolidine-2-carboxamide (2S)-1-[[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxo-ethyl)-10-(3-amino-3-oxo-propyl)-13-[(2S)-butan-2-yl]-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicos-4-yl]carbonyl]-N-[(2S)-1-[(2-amino-2-oxo-ethyl)amino]-4-methyl-1-oxo-pentan-2-yl]pyrrolidine-2-carboxamide 50-56-6 O4375_SIGMA Pitosin Oxytocin (TN) D00089 Oxytocin (JP15/USP/INN) O3251_SIGMA Oxytocic hormone Syntocinon (TN) Pitocin (TN) C00746 OXT Ocytocin Oxytocin BCBcMAP01_000094