发明名称 |
Non-ionic polyol contrast media from ionic contrast media |
摘要 |
Novel non-ionic contrast media of a hitherto unknown combination of low osmolality and low viscosity are efficiently prepared from generally available ionic contrast media or non-iodinated precursors. Particularly, polyhydroxyhalo-hydrocarbons are employed with a triiodo-substituted acylamido benzoic acids in aqueous weakly basic media to selectively substitute the amido nitrogen, followed by activation of the carboxyl group for amide formation.
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申请公布号 |
US4954348(A) |
申请公布日期 |
1990.09.04 |
申请号 |
US19880214663 |
申请日期 |
1988.07.01 |
申请人 |
COOK IMAGING CORPORATION |
发明人 |
SOVAK, MILOS;RANGANATHAN, RAMACHANDRAN |
分类号 |
A61K49/04;C07C233/00;C07C233/16 |
主分类号 |
A61K49/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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