Chemical Name: 6α,9-Difluoro-11β-hydroxy-16α-methyl-3-oxo-17-(propanoyloxy) androsta-1,4-diene-17β-carboxylic acid ;
Synonym: Fluticasone EP Impurity A ; Fluticasone Carboxylic Acid Propionate ;
Smiles: C[C@@]12[C@](C(O)=O)(OC(CC)=O)[C@H](C)C[C@@]1([H])[C@]3([H])C[C@H](F)C4=CC(C=C[C@]4(C)[C@@]3(F)[C@@H](O)C2)=O
Inchi: InChI=1S/C25H31F3O5S/c1-5-20(31)33-25(21(32)34-12-26)13(2)8-15-16-10-18(27)17-9-14(29)6-7-22(17,3)24(16,28)19(30)11-23(15,25)4/h6-7,9,13,15-16,18-19,30H,5,8,10-12H2,1-4H3/t13-,15+,16+,18+,19+,22+,23+,24+,25+/m1/s1
Characterisation of impurities in bulk drug batches of fluticasone propionate using directly coupled HPLC–NMR spectroscopy and HPLC–MS
Nisha Mistry a , Ismail M. Ismail b , Marco S. Smith c , Jeremy K. Nicholson d , John C. Lindon
Journal of Pharmaceutical and Biomedical Analysis 16 (1997) 697–705