4,4'-Methylene-bis((9alpha-fluoro-11beta,21-dihydroxy-16alpha,17alpha-isopropylidenedioxy-1,4-pregnadiene-3,20-dione)3-methoxy-2-naphthoate) 55461-42-2 EINECS 259-650-0 Flupamesone Pregna-1,4-diene-3,20-dione, 21,21'-(methylenebis((2-methoxy-1,3-naphthalenediyl)carbonyloxy))bis(9-fluoro-11-hydroxy-16,17-((1-methylethylidene)bis(oxy))-, (11beta,16alpha)-(11'beta,16'alpha)-