103980-44-5 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((2Z)-(2-amino-4-thiazolyl)(methoxyimino)acetyl)amino)-3-(((2-furanylcarbonyl)thio)methyl)-8-oxo, monohydrochloride, (6R,7R) Ceftiofur hydrochloride Excenel U 64279A U 67279A