检验标准Specification

性状Characteristic

白色或类白色结晶性粉末
white or almost white crystalline powder

鉴别Identification

红外吸收 IR

溶解度Solubility

在水及乙醇中溶解soluble in water and in anhydrous ethanol

酸度PH

PH 7.5~9.0

硫酸盐Sulphate

≤0.10%

比旋度
Specific optical rotation

+30.5 to +35.0°

重金属Heavy Metal

≤0.001%

相关物质Related substances

丙酮acetone ≤0.50%
甲醇methanol ≤0.30%
二氯甲烷methylene chloride ≤0.06%

水分Water

≤4.0%

含量(以干品计)
Assay(on dried basis)

98.5%~101%

用途：

肌松药