Pyrazole is a heterocyclic organic compound characterized by a ring structure composed of three carbon atoms and two nitrogen atoms in adjacent positions, with the molecular formula C3H4N2.1H-pyrazole is the 1H-tautomer of pyrazole. It is a conjugate base of a pyrazolium. It is a conjugate acid of a pyrazol-1-ide. It is a tautomer of a 3H-pyrazole and a 4H-pyrazole

Pyrazole exhibits a variety of physiological activities, including analgesic, anti-inflammatory, antipyretic, antiarrhythmic, sedative, muscle relaxant, psychostimulant, anticonvulsant, monoamine oxidase inhibitory, antidiabetic and antibacterial effects.Pyrazole can be used as an intermediate for certain pharmaceuticals and pesticides, and plays a very important role in the research and development of medicines and pesticides.