Pentazine is a hypothetical chemical compound that consists of a six-membered aromatic ring containing five nitrogen atoms with the molecular formula CHN5.

The name pentazine is used in the nomenclature of derivatives of this compound.

Pentazine is predicted to be unstable and to decompose into hydrogen cyanide (HCN) and nitrogen (N2).

[1] The activation energy required is predicted to be around 20 kJ/mol.

[2] This article about a hypothetical chemical compound is a stub.