3,4-Dihydro-7-hydroxy-2(1H)-quinolinone is a chemical compound with the molecular formula C9H9NO2. It belongs to the class of quinolinone derivatives and is known for its pharmacological properties. This compound is characterized by a quinolinone ring system with hydroxy and dihydroxy groups, making it valuable in medicinal chemistry research. Its unique structure and reactivity make it a versatile intermediate for the synthesis of various pharmaceutical compounds. 3,4-Dihydro-7-hydroxy-2(1H)-quinolinone is a pale yellow to brown crystalline powder that is sparingly soluble in water but soluble in organic solvents.