CRYSTALLINE ACID-ADDITION SALT OF CEFDINIR AND CEFDINIR PRODUCTION METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a crystalline acid-addition salt from cefdinir; to provide a production method of the acid-addition salt; and to provide a cefdinir production method using the acid-addition salt. SOLUTION: High purity cefdinir can be produced by a method comprising a step of preparing a crystalline cefdinir salt by reacting a cefdinir intermediate with a mixture acid of formic acid-sulfuric acid or formic acid-methane sulfonic acid and a step of reacting the resultant crystalline salt with a base in a solvent. COPYRIGHT: (C)2008,JPO&INPIT