The 1,2,4-Benzenetricarboxylicacid, 5-sulfo-, with the CAS registry number 51307-74-5, has the systematic name of 5-sulfobenzene-1,2,4-tricarboxylic acid. And the molecular formula of the chemical is C₉H₆O₉S. What's more, it is always used as organic pigments intermediate.

The characteristics of 1,2,4-Benzenetricarboxylicacid, 5-sulfo- are as followings: (1)ACD/LogP: -1.05; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 9; (8)#H bond donors: 4; (9)#Freely Rotating Bonds: 4; (10)Polar Surface Area: 174.65 Å²; (11)Index of Refraction: 1.67; (12)Molar Refractivity: 55.93 cm³; (13)Molar Volume: 149.799 cm³; (14)Polarizability: 22.172×10^-24cm³; (15)Surface Tension: 106.89 dyne/cm; (16)Density: 1.937 g/cm³.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=S(O)(=O)c1cc(c(cc1C(O)=O)C(O)=O)C(O)=O
(2)InChI: InChI=1/C9H6O9S/c10-7(11)3-1-5(9(14)15)6(19(16,17)18)2-4(3)8(12)13/h1-2H,(H,10,11)(H,12,13)(H,14,15)(H,16,17,18)
(3)InChIKey: YTABKRGYUUVFFE-UHFFFAOYAP