The title compound, C13H19NO3, crystallises in the monoclinic space group with two molecules, A and B, in an asymmetric unit. The intermolecular O---H...O hydrogen bonds link the symmetry related molecules into the infinite chains parallel to [101] direction with the short O...O distances of 2.534(2) and 2.618(2) A in the chains of A and B molecules, respectively. The intermolecular N---H...O hydrogen bonds cross-link these two chains. |