What is the formula for the compound pyrazole?

What is the formula for the compound pyrazole?

Pyrazole is an organic compound with the formula C 3H 3N 2H. It is a heterocycle characterized by a 5-membered ring of three carbon atoms and two adjacent nitrogen atoms. Pyrazole is a weak base, with pK b 11.5 (pK a of the conjugated acid 2.49 at 25 °C).

Which is the only drug with a pyrazole ring?

Pyrazoles are also a class of compounds that have the ring C 3 N 2 with adjacent nitrogen atoms. Notable drugs containing a pyrazole ring are celecoxib (Celebrex) and the anabolic steroid stanozolol . Pyrazoles are synthesized by the reaction of α,β-unsaturated aldehydes with hydrazine and subsequent dehydrogenation:

Who was the first person to make pyrazole?

History. The term pyrazole was given to this class of compounds by German Chemist Ludwig Knorr in 1883. In a classical method developed by German chemist Hans von Pechmann in 1898, pyrazole was synthesized from acetylene and diazomethane.

How are pyrazole moieties used in medicine?

In medicine, derivatives of pyrazole are widely used The pyrazole ring is found within a variety of pesticides as fungicides, insecticides and herbicides, including fenpyroximate, fipronil, tebufenpyrad and tolfenpyrad. Pyrazole moieties are listed among the highly used ring systems for small molecule drugs by the US FDA

What kind of Medicine is pyrazole used for?

In medicine, derivatives of pyrazole are widely used. The pyrazole ring is found within a variety of pesticides as fungicides, insecticides and herbicides, including fenpyroximate, fipronil, tebufenpyrad and tolfenpyrad.

Which is the weak base of pyrazole acid?

Pyrazole is a weak base, with p Kb 11.5 (p Ka of the conjugated acid 2.49 at 25 °C). Pyrazoles are also a class of compounds that have the ring C 3 N 2 with adjacent nitrogen atoms. Notable drugs containing a pyrazole ring are celecoxib (Celebrex) and the anabolic steroid stanozolol .