N-(3-Chloro-4-fluorophenyl)-7-methoxy-6-nitroquinazolin-4-amine

Pharmaceutical intermediate for kinase inhibitors

6-Amino-4-[(3-chloro-4-fluorophenyl)amino]-7-quinazolinol

pharmaceutical intermediate for afatinib impurities

7-fluoro-2-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one

pharmaceutical intermediate

1-(1,1-Dimethylethyl) 2-ethyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate

Pharmaceutical intermediate for peptide synthesis

1-Boc-D-Pyroglutamic acid ethyl ester

Pharmaceutical intermediate

N-(3,4-Dichlorophenyl)-7-fluoro-6-nitroquinazolin-4-amine

impurity reference standard for afatinib