It is a white or a faintly yellow powder to which appropriate amounts of water are added to prepare an off white suspension for intramuscular use or a yellowish solution for intravenous adminstration.

• 它是一种白色至微黄色粉末，加适量水可配制成近乎白色的悬浊液，供肌肉注射用，或配制成黄色的溶液，供静脉注射用。