Fig. (1).

Categorization of 1,155 SC: category 1) SC listed by the EMCDDA and/or by the UNODC: 292 molecules; 2a) SC which are already scheduled, and/or for which evidence levels of abuse have already been reported in peer-reviewed papers, but which are not listed by either the EMCDDA or the UNODC: 94 molecules; 2b) SC commented on the psychonauts’ websites/for a: 767 molecules; 3) SC used as laboratory research products/analytical references and/or studied in preclinical or animal research: 2 molecules.