2-oxo-2-(2-aminothiazol-4-yl)acetic acid
O-(1-diphenylmethoxycarbonyl-1-methylethyl)hydroxylamine
2-(2-amino-4-thiazolyl)-(Z)-2-[(1-diphenylmethoxycarbonyl-1-methylethoxy)imino]thioacetic acid-S-benzothiazol-2-ylester
(Z)-2-[[[1-(2-amino-4-thiazolyl)-2-(3-oxido-1H-benzotriazol-1-yl)-2-oxoethylidene]amino]oxy]-2-methylpropanoic acid diphenylmethyl ester methanesulfonate (1:1) salt
azthreonam
3-<<(2-amino-4-thiazolyl)-<<1-(diphenylmethoxycarbonyl)-1-methyl ethoxy>-imino>-acetyl>-amino>-4-methyl-2-oxoazetidi-ne-1-sulfonic acid