The 5-Quinoxalinecarboxylicacid, with the CAS registry number 6924-66-9, is also known as Acide 5-quinoxalinecarboxylique. It belongs to the product categories of Quinoline series; Carboxylic Acids; Quinolines, Isoquinolines & Quinoxalines. This chemical's molecular formula is C₉H₆N₂O₂ and formula weight is 174.16. What's more, its IUPAC name is quinoxaline-5-carboxylic acid. 

Physical properties of 5-Quinoxalinecarboxylicacid are: (1)ACD/LogP: 0.97; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.53; (4)ACD/LogD (pH 7.4): -2.16; (5)ACD/BCF (pH 5.5): 1; (6)#H bond acceptors: 4; (7)#H bond donors: 1; (8)#Freely Rotating Bonds: 1; (9)Polar Surface Area: 52.08 Å²; (10)Index of Refraction: 1.697; (11)Molar Refractivity: 47.2 cm³; (12)Molar Volume: 122.5 cm³; (13)Surface Tension: 75.7 dyne/cm; (14)Density: 1.421 g/cm³; (15)Flash Point: 192.6 °C; (16)Enthalpy of Vaporization: 68.02 kJ/mol; (17)Boiling Point: 394.8 °C at 760 mmHg; (18)Vapour Pressure: 6.07E-07 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(O)c1cccc2nccnc12
(2)InChI: InChI=1S/C9H6N2O2/c12-9(13)6-2-1-3-7-8(6)11-5-4-10-7/h1-5H,(H,12,13)
(3)InChIKey: QLZNISOPACYKOR-UHFFFAOYSA-N