Synonym17,21-trihydr, betamethasone standard, (8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro- 11,17-dihydroxy-17-(2-hydroxyacetyl)-10,13,16-trimethyl- 6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one, Betamethasone Base & Salts, Betamethasone,9a-Fluoro-11ß,17a,21-trihydroxy-16ß-methylpregna-1,4-diene-3,20-dione, 9a-Fluoro-16ß-methyl-11ß,17a,21-trihydroxy-1,4-pregnadiene-3,20-dione, 9a-Fluoro-16ß-methylprednisolone, Betamethasone (200 mg), BetaMethasone (Celestone), BetaMethasone SolutioM
Molecular weight392.46
EINECS206-825-4
Density1.1283 (estimate)
Storage Temperature0-6°C
Refractive Index118 ° (C=1, Dioxane)
AlphaD +108° (acetone)
SolubilityPractically insoluble in water, sparingly soluble in anhydrous ethanol, very slightly soluble in methylene chloride.
Melting Point235-237°C
Merck14,1180