10052-67-2 11006-02-3 4-Ser-8-glu-oxytocin 4-Serine-8-glutamine-oxytocin Glumitocin Oxytocin, 4-L-serine-8-L-glutamine- Oxytocin, ser(4)-glu(8)- Oxytocin, seryl(4)-glutamine(8)-