Erlotinib Chloro ImpurityErlotinib Hydrochloride IMP 4-Chloro-6,7-bis(2-methoxyethoxy)-quinazoline

16-Hydroxyerythromycin (Erythromycin F)Erythromycin IMP (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3-(hydroxymethyl)-5,7,9,11,13-pentamethyloxacyclotetradecane-2,10-dione

Erythromycin EErythromycin IMP (2S,4'R,4aR,5'S,6'S,7R,8S,9R,10R,12R,14R,15S,16S,16aS)- 15-{[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6- methyloxan-2-yl]oxy}-7-ethyl-5',8,9,14- tetrahydroxy-4'-methoxy-4',6',8,10,12,14,16- heptamethyl-tetradecahydrospiro[[1,3]dioxino[5,4- c]oxacyclotetr

Erythromycin A Enol EtherErythromycin IMP 11-(4-Dimethylamino-3-hydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-5-ethyl-3,4-dihydroxy-9-(5-hydroxy-4-methoxy-4,6-dimethyl-tetrahydro-pyran-2-yloxy)-2,4,8,10,12,14-hexamethyl-6,15-dioxa-bicyclo[1021]pentadec-1(14)-en-7-one

Pseudoerythromycin A Enol EtherErythromycin IMP (2R,3R,6R,7S,8S,9R,10R)-7-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-4,13-dioxabicyclo[821]tridec-12-en-5-one; 8,9-Anhydropseudo-erythromycin A-6,9-hemiketal

N-Demethyl-N-(ethylsuccinyl) ErythromycinErythromycin IMP N-Demethyl-N-(ethylsuccinyl) Erythromycin

Desbutyl Dronedarone HydrochlorideDronedarone IMP N-(2-butyl-3-(4-(3-(butylamino)propoxy)benzoyl)benzofuran-5-yl)methanesulfonamide

Des(methylsulfonyl) Dronedarone OxalateDronedarone IMP (5-amino-2-butylbenzofuran-3-yl)(4-(3-(dibutylamino)propoxy)phenyl)methanone

Dronedarone Impurity 1Dronedarone IMP (5-amino-2-butylbenzofuran-3-yl)(4-hydroxyphenyl)methanone

2-Butyl-3-(4-hydroxybenzoyl)-5-nitrobenzofuranDronedarone IMP (2-butyl-5-nitrobenzofuran-3-yl)(4-hydroxyphenyl)methanone