1-(N-Maleoyl-gly)cys-oxytocin 57078-96-3 OXMGC Oxytocin, 1-(N-maleoyl-gly)cys- Oxytocin, 1-(N-maleoylglycyl)cysteine- Oxytocin, N-((2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)acetyl)-