Dexamethasone EP Impurity B Disodium salt

Chemical Name: 9-Fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione Disodium salt (as per EP)

Synonym: (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ((2S,3R)-4-((4-amino-N-isobutylphenyl)sulfonamido)-3-hydroxy-1-phenylbutan-2-yl)carbamate compound with ethanol (1:1)

Smile: O=C1C=C[C@]2(C)[C@@]3(F)[C@@H](O)C[C@]4(C)[C@](C(C[O-])=O)([O-])[C@@H](C)C[C@@]4([H])[C@]3([H])CCC2=C1.[Na+].[Na+]