The title molecule, C16H19ClN2O2, contains three planar fragments, i.e. the
quinoline system (A), the butylamino group (B) and the carboxyl group (C).
Angles A/B and A/C are 9.1 (2) and 79.08 (4)degrees, respectively. The alt
ernation of the bond lengths in the quinoline bicycle correlates with liter
ature data.