(S)-N4-(4-Fluorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine (Afatinib Impurity)

Afatinib impurity reference standard

(S)-N4-(3,4-Dichlorophenyl)-7-((tetrahydrofuran-3-yl)oxy)quinazoline-4,6-diamine

pharmaceutical intermediate for afatinib impurities

Methyl 3-((2S,3R)-2-(4-(benzyloxy)phenyl)-1-(4-fluorophenyl)-4-oxoazetidin-3-yl)propanoate

Pharmaceutical intermediate

1-bromo-3,5-dimethoxybenzene

pharmaceutical intermediate

(2S)-2-(9H-Fuoren-9-ylmethoxycarbonylamino)-6-((1-(2-hydroxy-4,4-dimethyl-6-oxocyclohexen-1-yl)-3-methylbutylidene)amino)hexanoic acid

Peptide synthesis protected amino acid

6-(Benzyloxy)-9-((1S,3R,4S)-4-(benzyloxy)-3-((benzyloxy)methyl)-2-methylenecyclopentyl)-9H-purin-2-amine

Pharmaceutical intermediate for nucleoside analogs