(2S-(2alpha,5alpha,6beta(S*)))-6-(((((4-Ethyl-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 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-6-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl)amino)phenylacetyl)amino)-7-oxo-, (2S-(2-alpha,5-alpha,6-beta(S*)))- 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-, (2S-(2alpha,5alpha,6beta(S*)))- 59703-84-3 6-(D-(-)-alpha-(4-Ethyl-2,3-dioxo-1-piperazinecarboxamido)phenylacetamido)penicillanic acid 61477-96-1 CCRIS 7362 EINECS 262-811-8 PIPERACILLIN Piperacillin anhydrous