2,3-Methylenedioxymethamphetamine
2,3-Methylenedioxymethamphetamine, also known as 2,3-MDMA or ORTHO-MDMA, is a positional isomer of the recreational drug 3,4-MDMA. It is a monoamine transporter substrate and inhibitor similarly to 3,4-MDMA. However, while showing similar potency at the norepinephrine transporter, 2,3-MDMA is less potent at the serotonin transporter. 2,3-MDMA has not been encountered as a recreational or designer drug.