Stimulants belong to a diverse group of psychoactive drugs whose function exerts a constant contribution to hyperactivity and impulse control. Illegal stimulant derivatives including amphetamines, arylcyclohexylamines, cathinones, cocaine/tropanes, phenethylamines, and piperazines are among the most widely abused across the US and Europe. However, the popularity of each substance, particularly in party culture settings, is frequently changing. Cayman offers more than 850 analytical standards for the identification of stimulants and is dedicated to working with the forensic community to quickly make reference standards available for new psychoactive substances (NPS).