Hydroxyoxytocin

oxytocin, 1-(2-hydroxy-3-mercaptopropionic acid)-

[1-(L-2-Hydroxy-3-mercaptopropanoic acid)]oxytocin

(+)-N-[(R)-2-Hydroxy-3-mercapto(1)propionyl]-L-Tyr-L-Ile-L-Gln-L-Asn-L-Cys(1)-L-Pro-L-Leu-Gly-NH2