CAS: 115-40-2 Molecular Formula: C21H16Br2O5S Molecular Weight (g/mol): 540.22 MDL Number: MFCD00011681 InChI Key: ABIUHPWEYMSGSR-UHFFFAOYSA-N Synonym: 5', 5”-dibromo-o-cresolsulfonephthalein PubChem CID: 8273 ChEBI: CHEBI:86154 IUPAC Name: 3,3-bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione SMILES: CC1=CC(=CC(Br)=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(Br)=C1