The crystal structure of the title Schiff base, C19H18N2O, has been determi
ned. The 6-methylquinoline group and formimidoyl moiety are almost planar,
and the dihedral angle between the planes of ethoxyphenyl and 6-methylquino
line is 44.02 (8)degrees. The crystal structure is stabilized by intramolec
ular and intermolecular hydrogen bonds of the C-H ... N type forming a chai
n extending in the a direction.