3-(Pyridin-4-ylthio)pentane-2,4-dione

In the title compound, C10H11NO2S, the acetylacetone group crystallizes in the keto form with all the non-hydrogen atoms in the acetylacetone group approximately co-planar with a maximum atomic deviation 0.055 (2) ; the dihedral angle between the acetylacetone group and the pyridine ring is 85.90 (6)°. An intramolecular O—H...O hydrogen bond involving the acetylacetone group forms a six-membered ring.