Synonyms: 2-Cresolsulfonephthalein 3',3''-Dimethylphenolsulfonephthalein Grade: indicator grade, Dye conte CAS No.: 1733-12-6 Molecular Formula: C21H18O5S Molecular Weight: 382.43 MDL No.: MFCD00005878 Appearance: Dark red powder Storage Temperature: Store at RT