In this study, three elementary reactions (a), (b), and (c) were detected by both CTY-TAD and PESmapping. These correspond to R1, R2, and R3 in our results. Reactions (d) and (e), which involve a transition from ĖF via the other ethyl formyl radical CH 3 CH 2 O Ċ=O to CO 2 + CH 3 ĊH 2 and CO + C 2 H 5 Ȯ respectively, were not reported by either of the two exploration methods. This behaviour is expected, since the exploration stops at the next DS, which in this case is the hydrogen atom migration leading to the other ĖF radical CH 3 CH 2 O Ċ=O (R3)/(b). An exploration starting from this point would likely have identified the production of CO 2 or CO, as can be seen by two similar reported dissociation reactions of ĖF: