L-Norpseudoephedrine is a psychostimulant drug of amphetamine family, first isolated from an Ephedra species. It is one of the two enantiomers of norpseudoephedrine, less potent that D-Norpseudoephedrine. L-Norpseudoephedrine is a norepinephrine and dopamine releasing agent, and has thermogenic and anorectic effect.

5-(2-Aminopropyl)indole (5-API, 5-IT, PAL-571) is a psychoactive phenethylamine derivative with empathogenic effects used for recreational purposes. 5-(2-Aminopropyl)indole, originally synthesized as a stimulant in the 1960s now joins the list of psychoactive substances and may to be one of the newest MDMA replacements. 5-(2-Aminopropyl)indole acts as a triple monoamine releasing agent and also as selective MAO-A inhibitor.

2,5-dimethoxy-3,4-dimethylphenethylamine (also known as 2-CG) is a psychedelic compound, which was first synthesized by Shulgin. There is not much information about its pharmacologic or biologic action because 2-CG have been taken only by Shulgin and a small test group.