Triamcinolone Acetonide EP Impurity B

Chemical Name: 9-Fluoro-11β,21-dihydroxy-16α,17-(1-methylethylidenedioxy)pregna-1,4,14-triene-3,20-dione (as per EP) ; (9-Fluoro-11,21-dihydroxy-16,17-[(1-methylethylidene)bis(oxy)]-(11β,16α)-pregna-1,4,14-triene-3,20-dione) (as per USP)

Smile: C[C@@]12[C@@]3(C(CO)=O)[C@H](OC(O3)(C)C)C=C1[C@]4([H])CCC5=CC(C=C[C@]5(C)[C@@]4(F)[C@@H](O)C2)=O