Once established, CRN evaluations of chemical oxidation processes can support the reevaluation of reactions of many organic compounds of concern in water and wastewater treatment processes, and the predictive assessment of chemical reactivity of chemicals in the product design phase. Most reactions of micropollutants with ozone are, in fact, understood incompletely. Even though sophisticated chemical analyses, such as non-target analysis by high resolution mass spectrometry generates numerous structural features of organic compounds, 87 such approaches are unable to provide a comprehensive view of the identity of the numerous intermediates and products (e.g., from drinking water ozonation processes ).