The 2,6-Biphenylenedicarboxylicacid, with the CAS registry number 65330-85-0, belongs to the product category of Biphenyl Derivatives. This chemical's molecular formula is C₁₄H₈O₄ and molecular weight is 240.2109. Its systematic name is called biphenylene-2,6-dicarboxylic acid. 

Physical properties of 2,6-Biphenylenedicarboxylicacid: (1)ACD/LogP: 0.93; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 1; (5)ACD/KOC (pH 7.4): 1; (6)#H bond acceptors: 4; (7)#H bond donors: 2; (8)#Freely Rotating Bonds: 2; (9)Index of Refraction: 1.757; (10)Molar Refractivity: 62.137 cm³; (11)Molar Volume: 151.44 cm³; (12)Surface Tension: 77.898 dyne/cm; (13)Density: 1.586 g/cm³; (14)Flash Point: 298.129 °C; (15)Enthalpy of Vaporization: 90.227 kJ/mol; (16)Boiling Point: 546.091 °C at 760 mmHg; (17)Vapour Pressure: 0 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: OC(=O)C2=C\C/3=C\1/C=C\C(=C/C/1=C\3\C=C2)C(O)=O
(2)InChI: InChI=1/C14H8O4/c15-13(16)7-1-3-9-11(5-7)10-4-2-8(14(17)18)6-12(9)10/h1-6H,(H,15,16)(H,17,18)
(3)InChIKey: CYISDYQPECMUKK-UHFFFAOYAZ