Stabilized γRO 2 starts with much lower internal energy, which prohibits the higher-energy reactions that are available to the entrance channel γR + O 2 . At the lowest temperatures simulated, shown in Figure , stabilized γQOOHα radical is formed. Above 400 K, the well-skipping reaction forming water and the alkoxy radical is the major pathway. At the highest temperatures and pressures, disassociation to reform γR + O 2 is the dominant pathway.