2-(4-Isopropyl-4-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-yl)-5-methyl­nicotinic acid

In the title herbicideh/phytocide, known as imaza­pic, C₁₄H₁₇N₃O₃, the pyridine and imidazole rings are almost coplanar [dihedral angle = 3.08 (5)°]. An intra­molecular O—H...N hydrogen bond occurs. In the crystal, an N—H...O hydrogen bond links mol­ecules into a chain parallel to [010].