发明名称 |
Crystalline acid salts of cefdinir and process for preparing cefdinir using same |
摘要 |
High purity cefdinir is prepared in a high yield by a process comprising the steps of: treating a crystalline salt of a cefdinir intermediate with a formic acid-sulfuric acid mixture or a formic acid-methanesulfonic acid mixture to obtain a crystalline salt of cefdinir and reacting the crystalline salt with a base in a solvent.
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申请公布号 |
US7157576(B2) |
申请公布日期 |
2007.01.02 |
申请号 |
US20030479291 |
申请日期 |
2003.11.25 |
申请人 |
HANMI PHARM. CO., LTD. |
发明人 |
LEE GWAN-SUN;CHANG YOUNG-KIL;KIM HONG-SUN;PARK CHUL-HYUN;PARK GHA-SEUNG;KIM CHEOL-KYUNG |
分类号 |
C07D501/22;C07B61/00;C07D501/00;C07D501/14 |
主分类号 |
C07D501/22 |
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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