1.Description is white or off-white or yellowish crystalline powder 2.Yellow or kelly4# Appearance: White or off-white or yellowish crystalline powderPurity: ≥ 97.0%Specific rotation:-27 ~-35 ° Colour: ≤ yellow or kelly 4#PH value:2.4~3.0Single: ≤ 1.5%Water: ≤ 1.5%Bacterial endotoxin: ≤ 0.083EU/mg Cefmenoxime hydrochloride