The 3-Thiophenecarboxylicacid, 2-methyl-, with the CAS registry number 1918-78-1, is also known as 2-Methyl-thiophene-3-carboxylic acid. This chemical's molecular formula is C₆H₆O₂S and molecular weight is 142.1756. Its systematic name is called 2-methylthiophene-3-carboxylic acid.

Physical properties of 3-Thiophenecarboxylicacid, 2-methyl-: (1)ACD/LogP: 1.96; (2)ACD/LogD (pH 5.5): 0.87; (3)ACD/LogD (pH 7.4): -0.78; (4)ACD/BCF (pH 5.5): 1.48; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 22.49; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 2; (9)#H bond donors: 1; (10)#Freely Rotating Bonds: 1; (11)Index of Refraction: 1.59; (12)Molar Refractivity: 36.39 cm³; (13)Molar Volume: 107.7 cm³; (14)Surface Tension: 52.6 dyne/cm; (15)Density: 1.319 g/cm³; (16)Flash Point: 118 °C; (17)Enthalpy of Vaporization: 53.85 kJ/mol; (18)Boiling Point: 271.5 °C at 760 mmHg; (19)Vapour Pressure: 0.00314 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(O)c1c(scc1)C
(2)InChI: InChI=1/C6H6O2S/c1-4-5(6(7)8)2-3-9-4/h2-3H,1H3,(H,7,8)
(3)InChIKey: YJZOPBSZDIBXBG-UHFFFAOYAW