Crystal structure of 3-hy­droxy­methyl-1,2,3,4-tetra­hydro­isoquinolin-1-one

In the title compound, C(10)H(11)NO(2), two independent but virtually superimposable mol­ecules, A and B, comprise the asymmetric unit. The heterocyclic ring in each mol­ecule has a screw-boat conformation, and the methyl­hydroxyl group occupies a position to one side of this ring with N—C—C—O torsion angles of −55.30 (15) (mol­ecule A) and −55.94 (16)° (mol­ecule B). In the crystal, O—H⋯O and N—H⋯O hydrogen bonding leads to 11-membered {⋯HNCO⋯HO⋯HNC(2)O} heterosynthons, involving three different mol­ecules, which are edge-shared to generate a supra­molecular chain along the a axis. Inter­actions of the type C—H⋯O provide additional stability to the chains, and link these into a three-dimensional architecture.