CAS NO. 65125-89-5 | (2S,5R)-6-[[2-[(4-butyl-2,3-dioxo-piperazine-1-carbonyl)amino]-2-pheny l-acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2 -carboxylic acid

(2S,5R)-6-[[2-[(4-butyl-2,3-dioxo-piperazine-1-carbonyl)amino]-2-pheny l-acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2 -carboxylic acid

T-1221	6Î±-[[(R)-[[(4-Butyl-2,3-dioxopiperazin-1-yl)carbonyl]amino]phenylacetyl]amino]penicillanic acid
(2S,5R)-6-[[2-[(4-butyl-2,3-dioxo-piperazine-1-carbonyl)amino]-2-pheny l-acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2 -carboxylic acid	(2S,5R,6R)-6-[[(R)-[[(4-Butyl-2,3-dioxopiperazin-1-yl)carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid