发明申请
US20110245347A1 METHOD FOR SELECTIVELY CRYSTALLIZING A Z ISOMER OF IOPROMIDE 有权
用于选择性地结晶碘吡啶的Z异构体的方法

METHOD FOR SELECTIVELY CRYSTALLIZING A Z ISOMER OF IOPROMIDE
摘要:
The present invention relates to a method for selectively crystallizing Z isomer of iopromide of formula (I) comprising a) dissolving a crude iopromide comprising a mixture of E and Z isomers or a concentrate thereof in an alcohol, and b) heating the resulting alcohol solution to obtain crystalline of Z isomer of iopromide; and a method for preparing a composition comprising the crystalline Z isomer of iopromide.
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