4-Hydroxy-1-methyl-3-phenylquinolin-2(1H)-one

In the title compound, C16H13NO2, the quinoline system is approximately planar with a maximum deviation from the least-squares plane of 0.059 (1) for the N atom. The phenyl ring is rotated by 62.16 (4)° with respect to the plane of the quinoline system. In the crystal, O—H...O hydrogen bonds link molecules into infinite chains running along the b-axis direction.