Hydrogen-bonding and C-H...pi interactions in 7-hydroxy-3-methoxy-4-methyl-5,6,7,8-tetrahydropyrido[1,2-c]pyrimidin-1(9H)-one.

In the title compound, C10H14N2O3, a pyrimidine ring is fused with a piperidine ring. The pyrimidine ring is planar, whereas the piperidine ring adopts a half-chair conformation. The molecules of the title compound are connected via O-H...O intermolecular hydrogen bonds into infinite zigzag chains. The pyrimidine ring is involved in three C-H...pi interactions, which link the hydrogen-bonded chains into a three-dimensional framework.