6,7-difluoro-1-methyl-4-oxo-4H-[1,3]thiazeto[3,2-a]-3-quinoline carboxylic acid ethyl ester Suppliers, 6,7-difluoro-1-methyl-4-oxo-4H-[1,3]thiazeto[3,2-a]-3-quinoline carboxylic acid ethyl ester Manufacturers.