The 2(1H)-Quinolinone,4-hydroxy-3-nitro-, with the CAS registry number 15151-57-2, is also known as 3-Nitroquinoline-2,4-diol, 4-Hydroxy-3-nitro-1H-quinolin-2-one. This chemical's molecular formula is C₉H₆N₂O₄ and molecular weight is 206.1549. Its systematic name is called 2-hydroxy-3-nitroquinolin-4(1H)-one. 

Physical properties of 2(1H)-Quinolinone,4-hydroxy-3-nitro-: (1)ACD/LogP: 1.02; (2)ACD/LogD (pH 5.5): -0.02; (3)ACD/LogD (pH 7.4): -1.78; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 7.84; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 6; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 2; (11)Index of Refraction: 1.698; (12)Molar Refractivity: 49.38 cm³; (13)Molar Volume: 127.9 cm³; (14)Surface Tension: 79.4 dyne/cm; (15)Density: 1.61 g/cm³; (16)Flash Point: 140.7 °C; (17)Enthalpy of Vaporization: 58.06 kJ/mol; (18)Boiling Point: 309.1 °C at 760 mmHg; (19)Vapour Pressure: 0.000282 mmHg at 25°C.

Preparation: this chemical can be prepared by 4-hydroxy-1H-quinolin-2-one. This reaction will need reagent aq. HNO₃. The yield is about 98%.

Uses of 2(1H)-Quinolinone,4-hydroxy-3-nitro-: it can be used to produce 2-methyl-5H-oxazolo[4,5-c]quinolin-4-one by heating. This reaction will need reagent Zn, AcOH with reaction time of 30 min. The yield is about 80%.

You can still convert the following datas into molecular structure:
(1)SMILES: [O-][N+](=O)C=2C(=O)c1c(cccc1)NC=2O
(2)InChI: InChI=1/C9H6N2O4/c12-8-5-3-1-2-4-6(5)10-9(13)7(8)11(14)15/h1-4H,(H2,10,12,13)
(3)InChIKey: SHZUGBYEPDMAPC-UHFFFAOYAB