This chemical is called 2,5-Pyridinedisulfonic acid, and its systematic name is pyridine-2,5-disulfonic acid. With the molecular formula of C₅H₅NO₆S₂, its molecular weight is 239.23. The CAS registry number of this chemical is 17624-04-3. Additionally, its product category is Pyridines.

Other characteristics of the 2,5-Pyridinedisulfonic acid can be summarised as followings: (1)ACD/LogP: -1.90; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -6.4; (4)ACD/LogD (pH 7.4): -6.4; (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: 7; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 116.39 Å²; (13)Index of Refraction: 1.623; (14)Molar Refractivity: 45.25 cm³; (15)Molar Volume: 128.2 cm³; (16)Polarizability: 17.93×10^-24cm³; (17)Surface Tension: 86.2 dyne/cm; (18)Density: 1.865 g/cm³.

You can still convert the following datas into molecular structure: 
1.SMILES: O=S(=O)(O)c1ncc(cc1)S(=O)(=O)O
2.InChI: InChI=1/C5H5NO6S2/c7-13(8,9)4-1-2-5(6-3-4)14(10,11)12/h1-3H,(H,7,8,9)(H,10,11,12)
3.InChIKey: PSQANOCQLYLEOH-UHFFFAOYAS