triamcinlone Acetonide Acetat

[Product name]: triamcinlone Acetonide Acetate 
[Chemicalname]:9-fluoro-11β,21-dihydroxy-16α,17-(1-methylethylidenedioxy)pregna-l,
4-dme-3,20-dione,
[Product category]： corticosteroids
[CAS NO.] 3870-07-3
[molecular formula]:  C26H33FO7
[molecular weight]: 476.5
[Packing specification]: 1KG/tin 
[Appearance]: white or almost white crystalline powder, odorless 
[Identification]: it should be positive 
[specific rotation]: +92°~+98°
[loss on drying]: ≤1.0%
[fluorine value]: 3.6%~4.4%
[selenium value]: ≤0.005%
[residue on ignition]: ≤0.1%
[related substance]: ≤3, ≤2.0%
[assay]: calculated the content of C26H33FO7 on the dried basis, it should be 97.0%~102.0% 
[storage]: store in airtight container, protected from light