2,6-Naphthalic acid (CAS NO.1141-38-4) is used as pharmaceutical intermediate.

 The 2,6-Naphthalenedicarboxylic acid, with the CAS registry number 1141-38-4. It belongs to the product categories of Intermediates & Fine Chemicals;Pharmaceuticals. This chemical's molecular formula is  C₁₂H₈O₄  and molecular weight is 216.19. Its EINECS number is 214-527-0.What's more,Its systematic name is 2,6-Naphthalenedicarboxylic acid.It is a beige powderwhich is irritating to eyes, respiratory system and skin. So when you use it ,you should avoid contact it  with your skin and eyes .And it is used as pharmaceutical intermediate.

Physical properties about 2,6-Diaminotoluene are:
(1)ACD/LogP:  2.126; (2)# of Rule of 5 Violations:  0; (3)ACD/LogD (pH 5.5):  -0.68; (4)ACD/LogD (pH 7.4):  -2.02; (5)ACD/BCF (pH 5.5):  1.00; (6)ACD/BCF (pH 7.4):  1.00; (7)ACD/KOC (pH 5.5):  1.00; (8)ACD/KOC (pH 7.4):  1.00; (9)#H bond acceptors:  4; (10)#H bond donors:  2; (11)#Freely Rotating Bonds:  2; (12)Index of Refraction:  1.708; (13)Molar Refractivity:  57.955 cm³; (14)Molar Volume:  148.608 cm³; (15)Surface Tension:  73.6589965820313 dyne/cm; (16)Density:  1.455 g/cm³; (17)Flash Point:  232.396 °C; (18)Enthalpy of Vaporization:  73.135 kJ/mol; (19)Boiling Point:  437.281 °C at 760 mmHg; (20)Vapour Pressure:  0 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES:c1cc(cc2c1cc(cc2)C(=O)O)C(=O)O;
(2)Std. InChI:InChI=1S/C12H8O4/c13-11(14)9-3-1-7-5-10(12(15)16)4-2-8(7)6-9/h1-6H,(H,13,14)(H,15,16);
(3)Std. InChIKey:RXOHFPCZGPKIRD-UHFFFAOYSA-N.