9,10-Difluoro-7-oxo-2,3-dihydro-7H-pirido[1,2,3-DE][1,4]benzothiazine-6-carboxylic acid Chemical name : 9,10-Difluoro-7-oxo-2,3-dihydro-7H-pirido[1,2,3-DE][1,4]benzothiazine-6-carboxylic acid Molecular formula : C12H7F2NO3S Molecular weight : 283.24 Structural formula : Property : Earthy yellow powder,insoluble in water,slightly…