This chemical is called Benzenesulfonic acid, 2-methyl-, and it can also be named as Toluene-2-sulphonic acid. With the molecular formula of C₇H₈O₃S, its molecular weight is 172.20. The CAS registry number of this chemical is 88-20-0.

Other characteristics of the Benzenesulfonic acid, 2-methyl- can be summarised as followings: (1)ACD/LogP: 0.93; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -2.57; (4)ACD/LogD (pH 7.4): -2.57; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 3; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 51.75 Å²; (13)Index of Refraction: 1.562; (14)Molar Refractivity: 41.72 cm³; (15)Molar Volume: 128.4 cm³; (16)Polarizability: 16.54×10^-24cm³; (17)Surface Tension: 48.2 dyne/cm; (18)Density: 1.34 g/cm³.

You can still convert the following datas into molecular structure: 
1.InChI: InChI=1/C7H8O3S/c1-6-4-2-3-5-7(6)11(8,9)10/h2-5H,1H3,(H,8,9,10)
2.Smiles: c1(c(cccc1)C)S(O)(=O)=O