CAS: 34487-61-1 Molecular Formula: C19H13NaO5S Molecular Weight (g/mol): 376.358 MDL Number: MFCD00066901 InChI Key: HKHYOKBQJILTEI-UHFFFAOYSA-M Synonym: phenol red, sodium salt,phenolsulfonephthalein sodium salt,sodium 4-3-4-hydroxyphenyl-1,1-dioxido-3h-benzo c 1,2 oxathiol-3-yl phenolate,phenol red sodium salt,phenol, 4,4'-1,1-dioxido-3h-2,1-benzoxathiol-3-ylidene bis-, monosodium salt,phenol, 4,4'-1,1-dioxido-3h-2,1-benzoxathiol-3-ylidene bis-, sodium salt 1:1,phenol red, acs,phenolredsodiumsalt,phenolsulfonephthalein sodium,sodium 4-3-4-hydroxyphenyl-1,1-dioxo-2,1??-benzoxathiol-3-yl benzenolate PubChem CID: 23686673 IUPAC Name: sodium;4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenolate SMILES: C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)[O-].[Na+]