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专利详细信息
专利号
CN102898442A
专利标题 The process for purification of ceforanide
专利权人 Henan Zhongshuai Pharma Ceutical Sci & Tech Development Co.,ltd.;
发明人
申请号 CN20121411677
申请日 2012/10/25
公开日 2013/1/30
优先权号
IPC C07D50136000;
专利类型
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The invention provides a kind of process for purification that can obtain the high purity ceforanide with the reaction of ceforanide crude product and dicyclohexyl amine utilize impurity 3-[(1-carboxymethyl in the crude product) tetrazole-5-sulfydryl] methyl-7-amino-4-Cephalosporanic acid (ceforanide intermediate A CATAA) dicyclohexyl amine salt makes with extra care the extraordinarily thick product of cephalo thunder with ceforanide dicyclohexyl amine salt different solubility in organic solvent-aqueous solution.Ceforanide process for purification of the present invention has avoided toxicity very large the arylamine class material N that carinogenicity is very strong the use of accelerine make ceforanide purity from 70 ~ 85% of crude product bring up to after refining more than 99.5% purity improves greatly yield is better and starting material are easy to get and is convenient to the realization of ceforanide suitability for industrialized production.
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