4'-Fluoro-4-methylaminorex (4F-MAR, 4-FPO) is a recreational designer drug from the substituted aminorex family, with stimulant effects. It was first detected in Slovenia in 2018.[1][2][3] It was made illegal in Italy in March 2020.[4]
^"DECRETO 13 marzo 2020. Aggiornamento delle tabelle contenenti l'indicazione delle sostanze stupefacenti e psicotrope" [Update of the tables containing the indication of narcotic and psychotropic substances]. Official Gazette (in Italian). The Republic of Italy. 13 March 2020. di cui al decreto del Presidente della Repubblica 9 ottobre 1990, n. 309 e successive modificazioni ed integrazioni. Inserimento nella tabella I e nella tabella IV di nuove sostanze psicoattive. (20A01820) (GU Serie Generale n.85 del 30-03-2020) [as per the decree of the President of the Republic October 9, 1990, n. 309 and subsequent amendments and additions. Inclusion in Table I and Table IV of new psychoactive substances. (20A01820) (GU General Series n.85 of 30-03-2020)]