It's worth noting that the term "ecstacy pill" encompasses a huge array of psychoactive and non-psychoactive substances. Go and scare yourself at sites like PillReports:
Unless he or one of his friends was an organic chemist, MDMA - a relatively expensive drug to synthesize - is likely to be way down the list on the menu of chemicals that Mr A actually consumed.
or he just had a reputable dealer?
x is on my hell-no list, but I've known people that take it and buying from someone with connections is quite different than the randomness you'll get if you try to buy at a rave. There is a whole social hierarchy about manufacture and distribution of pure samples of stuff like that.
http://www.pillreports.com/
Unless he or one of his friends was an organic chemist, MDMA - a relatively expensive drug to synthesize - is likely to be way down the list on the menu of chemicals that Mr A actually consumed.