Crystalline forms of addition salts with acids, of ((amino-2-thiazolyl-4)-2-methoxyimino-2-acetamido)-7-carboxy-2-((dioxo-5,6-formylmethyl-4-tetrahydro-1,4,5,6-triazine-1,2,4-yl-3)-thio-2-vinyl)-33-oxo-8-thia-5-aza-1-bicyclo(4.2.0)-octene-2-isomer syn, form E and their preparation.

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: <IMAGE> and their preparation. These salts are useful for the purification of the above product and for use in pharmacy.