Soluble in N,N-dimethylformamide; sparingly soluble in methanol; slightly soluble in acetonitrile; practically insoluble in water.  

IR HPLC: The retention time of the major peak of the Sample solution corresponds to that of the Standard solution, as obtained in the Assay.

Pre-doxercalciferol≤0.15% 

trans-Doxercalciferol (if present)a,b≤0.30% 

β-Doxercalciferol (if present)b, c≤0.50% 

Dihydrodoxercalciferol (if present)b, d≤0.50% 

Any other individual impurity≤0.50% 

Total impurities≤1.0%

≤0.50%

+45° ~ +52°

The total aerobic microbial count is NMT 103cfu/g. 

Total combined yeasts and molds count is NMT 102cfu/g.

98.0%~102.0% 

It is mainly used to treat osteoporosis, secondary hyperparathyroidism (SHPT), etc.

Preserve in tight containers and store at 2°~8° or at -20° or below. Protect from light.