Ozonolysis is an organic reaction where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone. Alkenes and alkynes form organic compounds in which the multiple carbon–carbon bond has been replaced by a carbonyl group[1][2][3] while azo compounds form nitrosamines.[4] The outcome of the reaction depends on the type of multiple bond being oxidized and the work-up conditions.