6-?Bromo-?7-?methoxy-?1,?1-?dimethyl-?3,?4-?dihydronaphthalen-?2(1H)?-?one is an intermediate of Alectinib (C183360), a highly selective and potent anaplastic lymphoma kinase (ALK) inhibitor capable of blocking the resistant gatekeeper mutant, which results in reduced cell growth.