Appearance

White to light yellow solid

White solid

Identification

IR: The infrared spectrum of the sample should correspond to the standard spectrum

complies

HPLC: The retention time of the major peak of the test solution should correspond to that of the standard solution,as obtained in the test for Purity.

complies

Loss on drying

≤2.0%

0.02%

Melting point

76℃~80℃

76.5℃~78.5℃

Specific optical rotation[α]_D²⁰ (c=3,MeOH)

+53°~ +59°

+56°

Purity(By HPLC)

≥98.5%

99.9%

e.e%(By HPLC)

≥99.0%

100.0%