Synonyms: 3,3'-Dimethylphenolphthalein Grade: Indicator grade Purity Limit: ≥ 98% (Spectrophotometry) CAS No.: 596-27-0 Molecular Formula: C22H18O4 Molecular Weight: 346.38 MDL No.: MFCD00005912 Appearance: White powder Storage Temperature: Store at RT