(S)-N1-(4-((3-염소-4-불소페닐)아미노)-7-(((테트라히드로푸란-3-基)산소基)喹唑啉-6-基)-N2，N2-디메틸草아미드(阿法替尼불순물)
(S)-N1-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-N2，N2-dimethyloxalamide(AfatinibImpurity)
(S)-N1-(4-((3-Chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-N2，N2-dimethyloxalamide(AfatinibImpurity) 98%