1-(3-Mercapto-3-methylbutanoic acid)-2-(O-methyl-L-tyrosine)-4-L-threonine oxytocin 1-Desaminopenicillamyl-2-meo-tyr-4-thr-oxytocin 70056-25-6 Oxapmtt Oxytocin, 1-deaminopenicillamyl-O-methyltyrosyl(2)-threonyl(4)- Oxytocin, 1-deaminopenicillamyl-meo-tyr(2)-thr(4)-