[Product name]: Betamethasone
[Chemical name]: 9-fluoro -11β,17,21-trihydroxy-16β-methylpregna-l, 4-dime-3,20-dione
[Product category]：corticosteroids
[CAS NO.] 378-44-9
[molecular formula]:  C22H29FO5
[molecular weight]: 329.5
[Packing specification]: 1KG/tin 
[specification]: CP/EP/USP/BP
[Appearance]: white or almost white crystalline powder, odorless and tasted bitter
[Melting point]:236℃~244℃
[specific rotation]: +115°~+121°
[assay]: calculate content of C22H29FO5, 97.0%~103.0%
[storage]: store in airtight container, protected from light