16 α,17-[(1RS)-ethylidenebis(oxy)]-11 β,21-dihydroxypregna-1,4-diene-3,20- dione

Chemical Name:16 α,17-[(1RS)-ethylidenebis(oxy)]-11 β,21-dihydroxypregna-1,4-diene-3,20- dione
Synonyms:Budesonide Impurity B; (6aR,6bS,7S,8aS,8bS,10R,12aS,12bS)-7-Hydroxy-8b-(2-hydroxyacetyl)-6a,8a,10-trimethyl-6a,6b,7,8,8a,8b,11a,12,12a,12b-decahydro-1H-naphtho[2′,1′:4,5]indeno[1,2-d][1,3]dioxol-4(2H)-one;
CAS Number:68293-08-3
Molecular Formula:C23H30O6
Molecular Weight:402.48
Category:Standards; Steroids;
Applications:16 α,17-[(1RS)-ethylidenebis(oxy)]-11 β,21-dihydroxypregna-1,4-diene-3,20- dione is an impurity of Budesonide (B689490). Budesonide is a non-halogenated glucocorticoid related to triamcinolone hexacetonide. Used as an antiinflammatory agent.
References:Ryrfeldt., A., et a.: J. Steroid Biochem., 10, 317 (1979), Roth, G., et al.: J. Pharm. Sci., 69, 766 (1980), Clissold, S.P., et al.: Drugs, 28, 485 (1984),
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