mm 哌拉西林系列杂质对照品

哌拉西林系列杂质对照品        
哌拉西林杂质对照品A ampicillin      
哌拉西林杂质对照品B penicilloic acids of piperacillin      
哌拉西林杂质对照品C penilloic acids of piperacillin      
哌拉西林杂质对照品D piperacillinylampicillin      
哌拉西林杂质对照品E 1-ethylpiperazine-2,3-dione      
哌拉西林杂质对照品F acetylated penicilloic acids of piperacillin      
哌拉西林杂质对照品G （2R）-2-[[（4-ethyl-2,3-dioxopiperazin-1-yl）carbonyl]amino]-2-phenylacetic acid      
哌拉西林杂质对照品H 6-aminopenicillanic acid