I've been doing MDMA since high school... once I had the ability to run tests I didn't see much more than 10-20% MDP2Pol on GC, when it did show. Some batches had very little and were >95% MDMA based on peak area. Once or twice I also popped it into a polarimeter to check the optical rotation too: always consistently racemic.
... you do realize MDP2Pol is actually a metabolite of MDMA in humans? What activity is it supposed to have? As a non-nitrogenous compound it's gonna have poor PK, and I'm not really aware of any drugs that have similar structure and are also active at the levels present as an MDMA impurity (so maybe 10mg per dose?)
All I can say is, I have had remarkably consistent effects with MDMA. I'm happy to report my friends have had nothing but positive experiewnces when we dose together, too. I do try to keep things steeped in novelty though, my attitude has always been that complacency, boredom and repetition will doom
almost any drug experience. Believe me or don't, I could care less. I'm just sharing my experiences. (I don't think I have ever had a MDMA experience that could be called 'meh'.)
For purification, what I'd do is look at a TLC plate, if you can get MDMA eluting as a spot that's got a good Rf, flash chromatography is absolutely the way to go. It is effectively a pressure/vacuum-assisted solvent flow system, which has a much higher flow rate than gravity fed columns. All you really need is a sintered glass funnel, flash silica, and solvent.
But the real head scratcher is the presumed dichotomy between 'meh' and 'magic' MDMA: if you purify meh-MDMA do you get magic MDMA out? Or just pure 'meh'? If you made a mixture of 50% Meh and 50% magic, could you seperate them again? If so meh-MDMA is a distinct chemical entity, and therefore isn't MDMA. If not, then meh-MDMA and magic-MDMA have identical structures and yet differing effects, which is a contradiction in terms. Ergo, I don't buy there is a physical difference between the two.
Another thing to ruminate on: why didn't Shulgin or any of the early MDMA proponents mention any sort of different effect profiles or 'batches'? Exactly when did this become a problem?
Obviously they're not 100% identical, but I found that the average street user who was used to cut street heroin would be withdrawal-free when taking DHH, and it produced enough of the typical opioid effects that nobody asked too many questions.
Are you familiar with the fairly recent study that showed career opioid addicts
cannot distiinguish between hydromorphone and diamorphine at equipotent doses? It's totally contrary to what might seem to be the 'obvious' answer that the two drugs are wildly different. It kind of makes sense from a molecular physics point of view though: both drugs bind at the same site, producing the same effects at mu-opioid receptors.