Item

Specification

Appearance

White to practically white, crystalline powder.

Identification

A: IR B:UV

Melting point

Melts at about 215 ,

Solubility

Very slightly soluble in water and in ether; sparingly soluble in acetone and in alcohol; slightly soluble in chloroform.

Specific rotation

+150o~+ 156o

Loss on drying

≤1.0%

Residue on ignition

Negligible

Chromatographic purity

Any individual impurity

≤0.5%

Total impurities

≤2.0%

Assay

97.0%~102.0%