发明名称 |
CRYSTALS OF PENICILLIN AND PROCESS FOR THE PRODUCTION THEREOF |
摘要 |
Stable crystals of diphenylmethyl 2-methyl-2-triazolyl-methylpenam-3-carboxylate, which cause substantially no decomposition or deterioration even after allowing to stand at room temperature for one year. The crystals are produced by concentrating a solution of diphenylmethyl 2-methyl-2-triazolylmethylpenam-3-carboxylate of formula (2), diluting the resulting concentrate with an acetic ester, and mixing the obtained dilution with hexane or a hexane/acetic ester mixture to crystallize diphenylmethyl 2-methyl-2-triazolylmethyl-penam-3-carboxylate wherein Ph is phenyl.
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申请公布号 |
WO0214325(A1) |
申请公布日期 |
2002.02.21 |
申请号 |
WO2001JP06895 |
申请日期 |
2001.08.10 |
申请人 |
OTSUKA CHEMICAL CO., LTD.;SHIMABAYASHI, AKIHIRO;KAWAHARA, ICHIRO |
发明人 |
SHIMABAYASHI, AKIHIRO;KAWAHARA, ICHIRO |
分类号 |
A61P31/04;C07D499/00;C07D499/18;C07D499/44;C07D499/86;C07D499/87;C07D499/897;(IPC1-7):C07D499/18 |
主分类号 |
A61P31/04 |
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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