I've read about it on one of Russian websites, there were the sources for the article I've read: Phenethylamines I have known and loved: a chemical love story. Shulgin A. and A.; The safety and efficacy of ±3,4-methylenedioxymethamphetamine-assisted psychotherapy in subjects with chronic, treatment-resistant posttraumatic stress disorder: the first randomized controlled pilot study by Michael C Mithoefer, Mark T Wagner, Ann T Mithoefer, Lisa Jerome, and Rick Doblin. Personally I am not familiar with anyone who even used it, in my town there is no MDMA, even weed is illegal :)