C22H21N3O6
Neat
423.43
Erlotinib impurity 139; 2218487-28-4
2-[2-[4-(3-ethynylanilino)-7-(2-hydroxyethoxy)quinazolin-6-yl]oxyethoxy]acetic acid
InChI=1S/C22H21N3O6/c1-2-15-4-3-5-16(10-15)25-22-17-11-19(31-9-8-29-13-21(27)28)20(30-7-6-26)12-18(17)23-14-24-22/h1,3-5,10-12,14,26H,6-9,13H2,(H,27,28)(H,23,24,25)