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TDA(7—ACA 噻二唑)是头孢唑啉酸的中间体,其质量的优劣对成品的质量有很大影响。考察三种7—ACA 对 TDA 质量的影响,发现用精制后的7—ACA 和新的各项指标均合格的7—ACA 制得的 TDA 质量和收率都很好.
TDA (7-ACA thiadiazole) is an intermediate cefazolin acid, the quality of the quality of the finished product has a great impact. The effect of the three 7-ACA on the quality of TDA was investigated and it was found that the quality and the yield of TDA obtained from refined 7-ACA and the new 7-ACA with various indexes were good.