In this work we have decided to characterize 8AQ cathodic processes occurring at potentials below -1 V vs. Ag/AgCl in aqueous solution using CV (Figure ) and DPV (Figure ). In the negative scan range, we have observed an irreversible reduction peak preceded by a pre-peak of very low current value. In the recorded cyclic voltammograms, no oxidation peaks were observed, in this potential range, suggesting an EC mechanism (Figure ). An increase in pH causes a shift of Ered to more negative potentials indicating the influence of the protonation on the electrochemical process (Figure ). Importantly, the obtained linear relationship Ered vs. pH with slope of 59 mV per pH unit (Figure ), shows that the reduction process over the entire pH range follows the same mechanism and involves the same number of electrons and protons (see SI Nernst Equation). The attachment of 2 electrons and 2 protons can result in the formation of a dihydroquinolin-8-amine. Formation of a dihydroquinolin-8-amine seems to be probable, due to the fact that the oxidation current 8AQ and the reduction current have a similar value. The possibility of the formation of such products is supported by SEC measurements as well as computational studies (Figure ).