鉴别
Identification

1、本品的红外吸收图谱应与对照品图谱一致；

2、与对照品主峰保留时间一致1、IR-spectrum matches reference spectrum;
2、The retention time of the main peak was consistent with that of the control substance.

外观
Appearance

类白色至白色固体
Off- white to white solid

干燥失重
Loss on drying

≤1.0%

灼烧残渣
Residue on ignition

≤ 0.5%

水分
Water (%)

≤ 0.5%

对映异构体Enantionmer

≤0.1%

未知单杂
Unknow single impurity

≤ 1.0%

总杂（%）
Total impurities

≤ 2.0%

含量
Assay

98.0%~102.0%