发明名称 |
A PROCESS FOR THE PURIFICATION OF DIACEREIN |
摘要 |
A process for the preparation of diacerein in which diacerein is purified by crystallization of the crude product with a mixture of solvents consisting of acetic acid and acetic anhydride, or with only acetic anhydride, followed by treatment of the solution with ethylenediaminotetraacetic acid to remove any chromium traces.
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申请公布号 |
WO0068179(A1) |
申请公布日期 |
2000.11.16 |
申请号 |
WO2000EP03691 |
申请日期 |
2000.04.25 |
申请人 |
SYNTECO S.P.A.;SINISTRI, MONICA;SINISTRI, ROBERTA |
发明人 |
SINISTRI, MONICA;SINISTRI, ROBERTA |
分类号 |
C07C67/56;C07C67/52;C07C69/00;C07C69/16;C07C69/95;(IPC1-7):C07C69/95 |
主分类号 |
C07C67/56 |
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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