CRYSTALINE 7- 2 2-AMINOTHIAZOL-4-YL -2-METHOXYIMINO- ACETAMIDO -2-CARBOXY-3- 2- 5,6-DIOXO-4-FORMYLMETHYL-1,4,5,6- TETRAHYDRO-1,2,4-TRIAZIN-3-YL -THIOVINYL 8-OXO-5-THIA-1-AZA BICYCLO 4.2.0 OCT-2-ENE

摘要

Crystalline forms of addition salts with trifluoroacetic, methanesulphonic or hydrochloric acid, of the E form syn isomer of 7-[2-(2-amino-4-thiazolyl)-2-methoxyiminoacetamido]-2-carboxy-3- [(5,6-dioxo-4-formylmethyl-1,4,5,6-tetrahydro-1,2,4-triazin-3-yl)-2- thiovinyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]-2-octene of formula: and their preparation. These salts are useful for the purification of the above product and for use in pharmacy.