3,4-Ethylenedioxyamphetamine
3,4-Ethylenedioxyamphetamine (EDA), also known as EDA-6, is a drug of the phenethylamine, amphetamine, and EDxx families related to 3,4-methylenedioxyamphetamine (MDA). It is closely related to analogues including 3,4-ethylenedioxymethamphetamine (EDMA), 3,4-ethylidenedioxyamphetamine (EIDA), and 3,4-isopropylidenedioxyamphetamine (IDA).
Source: Wikipedia — 3,4-Ethylenedioxyamphetamine (CC BY-SA 4.0)