 In 1783, he was elected a foreign member of the Royal Swedish Academy of Sciences and in 1788 a Fellow of the Royal Society.During the Revolution, Guyton de Morveau (then styled "Guyton-Morveau") served as "Procureur général syndic" of the Côte-d'Or "département" in 1790, was elected a deputy to the Legislative Assembly in 1792, and then to the National Convention.Although a member of the right wing, he voted in favor of the execution of King Louis XVI.