New steroidal anti-inflammatory antedrugs: Methyl 3,20-dioxo-9α-fluoro-11β,17α,21-trihydroxy-1,4-pregnadiene-16α-carboxylate and methyl 21-acetyloxy-3,20-dioxo-11β,17α-dihydroxy-9α-fluoro-1,4-pregnadiene-16α-carboxylate

Abstract
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