Erlotinib Didesmethyl Metabolite ;

O,O-Didesmethyl Erlotinib Hydrochloride ;

Erlotinib Didesmethyl Metabolite M12 ;

2,2\'-[[4-[(3-Ethynylphenyl)amino]-6,7-quinazolinediyl]bis(oxy)]bis-ethanol ;

CAS # 183321-84-8 (base) ; 183320-12-9 (HCl salt) ;

C20H20ClN3O4 (HCl salt) ; MW: 401.84 ;

C20H19N3O4 (base) ; MW: 365.38 ;

Supplied as free base ;