发明名称 |
Anhydrous crystal of beta-lactam compound and method for preparation thereof |
摘要 |
The present invention provides anhydrous crystals of beta-lactam compound represented by the formula: The beta-lactam compound of the invention is produced by heating an aqueous solution of a salt of the beta-lactam compound and adjusting the pH of the aqueous solution to 3 or lower. The beta-lactam compound has excellent storage stability.
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申请公布号 |
US2004162277(A1) |
申请公布日期 |
2004.08.19 |
申请号 |
US20040476221 |
申请日期 |
2004.04.05 |
申请人 |
SHIMBAYASHI AKIHIRO;YAGUCHI SHIGETOSHI |
发明人 |
SHIMBAYASHI AKIHIRO;YAGUCHI SHIGETOSHI |
分类号 |
C07D499/06;A61K31/407;A61K31/431;A61P31/04;C07D499/00;C07D499/18;C07D499/44;C07D499/86;C07D499/87;C07D499/897;(IPC1-7):C07D499/44;A61K31/43 |
主分类号 |
C07D499/06 |
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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