Glu (4)-Gly-OH-Vasopressin

NA

3-((4R,7S,10S,13S,16S,20R)-20-amino-7-(2-amino-2-oxoethyl)-13-benzyl-4-((S)-2-(((S)-1-((carboxymethyl)amino)-5-guanidino-1-oxopentan-2-yl)carbamoyl)pyrrolidine-1-carbonyl)-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-10-yl)propanoic Acid; L-cystyl-L-tyrosyl-L-phenylalanyl-L-glutamyl-L-asparginyl-L-cystyl-L-prolyl-L-arginyl-glycine (disulfide bridge between cysteines);