Figure 2. Designer Drugs Are Chemically Related to MDMA Mephedrone, methylone, and MDMA all share the chemical structures shown in green.This figure shows the chemical structures of mephedrone, methylone, and MDMA. Parts of the molecules that are the same are green, and those that are different are gray. Mephedrone has an additional methyl group coming off a benzene ring and a ketone group on the carbon next to the ring. MDMA and methylone have a ring compound with two oxygen molecules coming off the benzene ring that mephedrone does not have. Methylone also has a ketone group in the same position as the mephedrone structure. MDMA does not have the ketone group.
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