THE GAMMA - CRYSTALLINE ANHYDRATE FORM OR SODIUM 7 - (D - ALPHA - FORMYLOXY -ALPHA - PHENYLACETAMIDO)- 3 - (1 - METHYL - 1H- TETRAZOL - 5 - YLTHIO

摘要

The cephalosporin antibiotic, sodium 7-(D-&agr;-formyloxy-&agr; - phenylacetamido)-3-(1-methyl-1H-tetrazol-5-y lthiomethyl)-3-cephem-4- carboxylate, is provided in a stable, non-solvated anhydrate crystalline form designated as the gamma crystalline form.