In 1830, together with Antoine Boutron-Charlard, Robiquet obtains a new molecule which he calls amygdalin; this component presented strange properties and was actually the first glycoside ever to be evidenced. This discovery was opening the door to the huge family of aromatic molecules, that are based on the cyclic 6 carbon benzenoic structure. In their various attempts at breaking down amygdalin in by-products, Robiquet and Boutron-Charlard obtained benzaldehyde but they failed in working out a proper interpretation of the structure of amygdalin that would account for it, and thus missed the identification of the benzoyl radical C7H5O.