Synonyms: 4-(4-Methylphenyl)-4-oxobut-2-enoic acid Purity Limit: ≥ 98% (HPLC) CAS No.: 20972-36-5 Molecular Formula: C11H10O3 Molecular Weight: 190.2 MDL No.: MFCD00075338 Appearance: Pale yellow crystalline solid Melting Point: 136-142 °C Storage Temperature: Store at 0-8°C