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公开(公告)号:US5489708A
公开(公告)日:1996-02-06
申请号:US161181
申请日:1993-12-01
IPC分类号: A61K49/04 , C07C231/10 , C07C237/46 , C07C233/05
CPC分类号: C07C231/10 , C07C237/46
摘要: The reduction of the O-alkyl isomer content of 5-[N-(2-acetoxyethyl)acetoxyacetamido]-N,N'-bis(2,3-diacetoxypropyl)-2,4,6-triiodoisophthalamide to thereby reduce and/or eliminate the production of impurities comparatively more difficult to remove during the purification of crude ioversol.
摘要翻译: 5- [N-(2-乙酰氧基乙基)乙酰氧基乙酰氨基] -N,N'-双(2,3-二乙酰氧基丙基)-2,4,6-三碘邻苯二甲酰胺的O-烷基异构体含量的降低从而减少和/或 消除在纯氧氟尿苷纯化过程中比较难去除的杂质的产生。