培美曲塞二钠杂质28 货号:P010028 英文名:Pemetrexed disodium Impurity 28 同义词:(2S)-diethyl 2-((4S)-4-(4-(3-(2,6-diamino-4-oxo-1,4-dihydropyrimidin-5-yl)-4-nitrobutyl)benzamido)-5-ethoxy-5-oxopentanamido)pentanedioate CAS号:N/A 分子式:C31H43N7O11 分子量:689.71 询价订购