what is 4fa
4-Fluoroamphetamine (4-FA) is a synthetic molecule of the amphetamine family. Molecules of the amphetamine class contain a phenethylamine core featuring a phenyl ring bound to an amino (NH2) group through an ethyl chain with an additional methyl substitution at R Î±.Amphetamines are alpha-methylated phenethylamines. Louisiana: 4-FA is currently listed as a Schedule I drug as of June 2013.