3-Methyl-1-phenyl 5-pyrazolone is a high-grade reagent supplied by Research Lab Fine Chem Industries. It is available in the form of a light yellow crystalline solid. 3-Methyl-1-phenyl 5-pyrazolone has a boiling point of 287C and a melting point in the range of 126 - 128C. It is stable as long it is stored as per the recommended storage conditions. Burning or prolonged exposure to heat or flammable sources may produce hazardous decomposition products like carbon oxides and nitrogen oxides. It is incompatible with strong oxidising agents. It may cause irritation to eyes, skin or respiratory system. CAS No. 89-25-8 Quantity provided: 100 gm/bottle Molecular formula: C10H10N2O Molecular weight: 174.20 g/mol Assay: Minimum 99%Pyrazolone and its derivatives are an important class of heterocyclic compounds that occur in many drugs. They represent an interesting template for combinatorial and medicinal chemistry due to their simple preparation and wide biological actions including antipyretic, antibacterial, antifungal, analgesic, uricosuric, antiarthritic, anti-inflammatory, antioxidant, antitubercular, and antitumor activities. Pyrazolone groups are present in several important dyes. They are frequently used in combination with azo groups to give a sub-family of azo dyes; sometimes referred to as azopyrazolones (For example: tartrazine, orange B, mordant red 19, yellow 2G).