What is "indazole"

Indazole \In"da*zole\, n. [Indol + azote.] (Chem.) A bicyclic nitrogenous compound, C7H6N2, analogous to indole, having a benzene ring fused to a pyrazole ring; called also indazol and benzopyrazole. It can be produced from a diazo derivative of cinnamic acid.

n. (context organic compound English) benzopyrazole

Indazole, also called isoindazole, is a heterocyclic aromatic organic compound. This bicyclic compound consists of the fusion of benzene and pyrazole.

Indazole derivatives display a broad variety of biological activities.

Indazoles are rare in nature. The alkaloids nigellicine, nigeglanine, and nigellidine are indazoles. Nigellicine was isolated from the widely distributed plant Nigella sativa L. (black cumin). Nigeglanine was isolated from extracts of Nigella glandulifera.

The Davis–Beirut reaction can generate 2H-indazoles.