The invention discloses a 1/5 water cefamandole sodium compound and a preparation method thereof. Each mol of cefamandole sodium compound contains 1/5 mol of water. The cefamandole sodium compound prepared by the method disclosed by the invention has low impurity content and good stability and has a wider application prospect.
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Paragraph 0029; 0031; 0032
(2017/07/20)
Tetrazole derivative
This invention relates to a tetrazole-5-thiol ester having D-configuration of the formula, STR1 a process for the preparation of the thiol ester and a process for the preparation of cefamandole using the thiol ester.
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(2008/06/13)
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