Clobetasol Propionate EP Impurity J

Chemical Name: (17R)-4′-Chloro-5′-ethyl-9-fluoro-11β-hydroxy-16β-methylspiro[androsta-1,4-diene-17,2′(3′H)-furan]-3,3′-dione ( 17α-spiro compound) (as per EP); 9α-Fluoro-11β-hydroxy-16β-methyl 3-oxo-androsta-1,4-diene-17(R)-spiro-2′-[4′-chloro-5′-ethylfuran-3′(2′H)-one] (as per USP)

Smile: [H][C@@]12C[C@@H]([C@@]3([C@]1(C[C@@H]([C@]4([C@]2(CCC5=CC(C=C[C@]45C)=O)[H])F)O)C)C(C(Cl)=C(CC)O3)=O)C