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ChemicalBook CAS DataBase List Cefixime Impurity
33748-00-4

Cefixime Impurity synthesis

4synthesis methods
-

Yield:33748-00-4 96%

Reaction Conditions:

in methanol; for 1 h;Reflux;

Steps:

3.3 Preparation of compound GVNA

The reaction solution was distilled under vacuum at a controlled temperature of 50 ° C. After recovery of acetone, a white solid was precipitated and filtered. The resulting cake was refluxed in 400 ml of methanol for 1 hour and cooled to 0 ° C. Filtration gave 469.7 g of white compound GVNA (GVNA yield 96%, calculated as GCLH).

References:

CN104045655,2016,B Location in patent:Paragraph 0060