Peroxonitrous acid- HOONO, is an isomer of nitric acid, HNO3, to which it rapidly converts. The half-life of peroxonitrous acid at 0 °C is 10 s; at 27°C, 0.23 s.
Definition
ChEBI: Peroxynitrous acid is a nitrogen oxoacid. It is a conjugate acid of a peroxynitrite.