Appearance White or almost white crystalline powder
Assay(by Potentiometry) 98.0%-101.0%(dried substance)
Solubiliy Practically insoluble in water、soluble in ethanol、sparingly soluble in methylene chloride.It shows polymorphism
Identification
IR or TLC and
Coloured reaction Positive
Appearance of Solution The solution is clear and not more intensely coloured than reference solution Y6
Tests
Specific optical rotation +145°~+154°