Molecular Weight:396.43 CAS No.[153-61-7] Structural formula: Quality Index: Description:white to off-white crystalline powder Specific optical rotation:+128~130° PH: 2.0~3.0 Moisture:≤0.2% Absorbency:≤0.3% Related matter:Max impurity≤1.0% Total impurities≤2.0% Assay:≥97%