3,7-Dichloroquinoline-8-carboxylic acid

Abstract

The title compound (trade name: quinclorac), C10H5Cl2NO2, was crystallized from a dimethyl sulfoxide solution. Quinclorac molecules are packed mainly via π–π stacking interactions between neighbouring heterocycles (interplanar distance: 3.31 Å) and via O—H...N hydrogen bonding.