物化性质(Physical properties): 本品为白色至微黄色粉末; 引湿性。 This product is a white to yellowish powder, hygroscopicity. 纯度(Purity)HPLC:≥98.0% 含量(Contents)dry basis:≥90.0% 贮藏(storage):严封,凉暗干燥处保存。Preserve in tight, light-resistant containers, in a cool and dry place.