Many benzylisoquinolines have a methylated nitrogen atom as well as functional groups containing oxygen (−OH, −OCH3, −OCH2O−) in positions 6, 7, 3′ and 4′.
Mnogi benzilizohinolini imaju metilisani atom azota, kao i funkcionalne grupe koje sadrže kiseonik (-OH, -OCH3, -OCH2O-) u pozicijama 6, 7, 3' i 4'.