1-(3-Mercaptopropionic acid)-2-(O-Et-tyr)-oxytocin 1-Deamino-2-tyr(ethyl)oxytocin 77648-79-4 Oxytocin, 1-(3-mercaptopropanoic acid)-2-(O-ethyl-L-tyrosine)- Oxytocin, 1-desamino-(O-Et-tyr)(2)- Oxytocin, 1-desamino-O-ethyltyrosine(2)- dE-Oxy