• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I A. General Reagents

Betamethasone
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Betamethasone 9α-Fluoro-11β,17α,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione; C22H29FO5  =  392.5 (378-44-9)

General reagent grade of commerce.

Melting point, about 236°.