The Cresol Purple, with the cas registry number 2303-01-7, has the systematic name of 2-[(Z)-(4-hydroxy-2-methylphenyl)(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid. It is a kind of green stable crystalline powder and incompatible with strong oxidizing agents. Its product categories are various, including Organics; Analytical Chemistry; Indicator (pH); pH Indicators. When you are dealing with this chemical, be careful not to contact with eyes and skin.

The characteristics of this chemical are as followings: (1)ACD/LogP: 2.99; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.51; (4)ACD/LogD (pH 7.4): -0.51; (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: 5; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 78.05 Å²; (13)Index of Refraction: 1.652; (14)Molar Refractivity: 102.12 cm³; (15)Molar Volume: 279.2 cm³; (16)Polarizability: 40.48×10^-24cm³; (17)Surface Tension: 58.9 dyne/cm; (18)Density: 1.369 g/cm³.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C/3/C=C\C(=C(/c1ccc(O)cc1C)c2ccccc2S(=O)(=O)O)\C(=C\3)C
(2)InChI: InChI=1/C21H18O5S/c1-13-11-15(22)7-9-17(13)21(18-10-8-16(23)12-14(18)2)19-5-3-4-6-20(19)27(24,25)26/h3-12,22H,1-2H3,(H,24,25,26)/b21-18-
(3)InChIKey: APQRURLENAYZRH-UZYVYHOEBT