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EP0640608A1 Intermediates in the synthesis of cephalosporins 失效
Zwischenproduktefürdie Synthese von Cephalosporinen。

Intermediates in the synthesis of cephalosporins
摘要:
Novel amidine salts of 7-Amino-3-hydroxymethyl-3-cephem-4-carboxylic acid (= HACA), particular guanidine and diaza-bicyclo-alkylene salts, are useful as intermediates in the synthesis of cephalosporins.
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