哌拉西林
piperacillin
哌拉西林杂质A
ampicillin
哌拉西林杂质B
penicilloic acids of piperacillin
哌拉西林杂质C
penilloic acids of piperacillin
哌拉西林杂质D
piperacillinylampicillin
哌拉西林杂质E
1-ethylpiperazine-2,3-dione
哌拉西林杂质F
acetylated penicilloic acids of piperacillin
哌拉西林杂质G
(2Rethyl-2,3-dioxopiperazin-1-yl)carbonyl]amino]-2-phenylacetic acid
哌拉西林杂质H
6-aminopenicillanic acid