Test Items
Specifications
Appearance
White or light yellow crystalline powder
Solubility
Freely soluble in methylene chloride, sparingly soluble in methanol, soluble in ethyl acetate,Almost insoluble in water.
Melting point
183-188℃
Specific rotation
+192.0°~+202.0°
Related substances
Impurity A ≤0.3%
Individual impurity ≤0.1%
Total impurities ≤1.0%
Identification
A: UV identification
B: IR identification
Acetic acid
≤0.5%
Loss on drying
Residue on ignition
≤0.1%
Heavy metal
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