Phenol Red sodium salt

The IUPAC name of Phenol red sodium salt is sodium 4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenolate. With the CAS registry number 34487-61-1, it is also named as Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, sodium salt (1:1). The product's categories are analytical chemistry; indicator (pH); pH indicators. It is dark red crystals or powder which is soluble in water, and slightly soluble in alcohol. In addition, Phenol red sodium salt is stable and incompatible with strong oxidizing agents. And it acts as a pH indicator.

The other characteristics of this product can be summarized as: (1)#H bond acceptors: 5; (2)#H bond donors: 2; (3)#Freely Rotating Bonds: 4; (4)Rotatable Bond Count: 2; (5)Tautomer Count: 2; (6)Exact Mass: 376.038139; (7)MonoIsotopic Mass: 376.038139; (8)Topological Polar Surface Area: 95; (9)Heavy Atom Count: 26; (10)Complexity: 575; (11)Undefined Atom StereoCenter Count: 1; (12)Covalently-Bonded Unit Count: 2.

When you are using this chemical, please be cautious about it as the following:
It can causes burns. And it is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 

People can use the following data to convert to the molecule structure.
1. SMILES: [Na+].[O-]c1ccc(cc1)C3(OS(=O)(=O)c2ccccc23)c4ccc([O-])cc4;
2. InChI: InChI=1/C19H14O5S.Na/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19;/h1-12,20-21H;/q;+1/p-2.