Halogenated amphetamines, including 4-fluoroamphetamine (4-FA), are psychostimulatory designer drugs which inhibit the uptake of monoamine neurotransmitters. 2-Fluoroamphetamine (2-FA) (hydrochloride) is a structural isomer of 4-FA, having the fluorine at the 2, rather than the 4, position. The physiological and toxicological properties of 2-FA are not known. This product is intended for research and forensic applications.