Erlotinib Impurity H Catalogue E212208 CAS 183320-12-9 (free base:183321-84-8) M.W 401.85 M.F C20H19N3O4.HCl Specifications FAQs 2,2'-((4-((3-ethynylphenyl)amino)quinazoline-6,7-diyl)bis(oxy))bis(ethan-1-ol) hydrochloride
