And again, I will chime in; the best RC opioid I have come across was a rather pure o-desmethyltramadol ("M1" metabolite/tramadol pro-drug) from a well-known source that stopped selling it due to issues with suppliers and some complaints of psychonerds, who had evidently given the supplier some negative feedback for selling an opioid (the supplier sold the typical RC psychedelics and stimulants). Plus, I bought the supplier out of his remaining quantity; and yes, it is all gone. That was truly some good stuff. I believe this was ~1 ago, and is the only time in half a decade that I went briefly back into IV drug use (yes, it was that good). Despite its structural similarities to tramadol proper; 'M1' felt nothing of the sort, very MOR specific, "relatively potent" intravenously, but only mediocre orally etc. I will throw out an antiqued word that has an obscure meaning: Narcosis........this compound, purified and IV'ed at dose, induced a very nice, deep 'narcosis'. It was not as "warm-bodied" as a morphine/morphinans/phenylheptanes, and did have striking similarities in both dosing and qualitative nature to meperidine. There was also a bit of a "body load", again, reminiscent of meperidine. Yet, it was qualitatively more "warm-bodied" than the fentanyls, though again, not nearly as "clean". Perhaps it is best that this is no longer available, although that supplier was actually being rather discerning in respect to his customer base. I believe that supplier is no longer "fully" operational, and even if operational, no longer offers this compound. And please, no PM's, they will go unanswered.
A decade or so ago, tramadol itself was sold as an RC, I was actually just looking at it in a very old, and long defunct "JLF" catalog (remember; "poisonous non-consumables"). In a sense they did quite a bit of damage to the RC market, not as much as a certain "pond designer" and some other profiteers......
Yet.....what do you think will happen if you sell rather pure samples of the likes of 5-methoxy-AMT to a bunch of 'kids' (this phrase encompasses 15 year old's to 35 year-old idiots - I guess I don't respect my elders), you are bound to have some OD moderator snort 200mg of it on youtube and wind up dead from hypertensive crisis (or even worse, survive a severe hypertensive crisis with irreversible trauma...this is a fate worse than death).......
Opioids just......don't seem destined for the broader RC market, and are, as I mentioned, even reviled by some of the more self-righteous "psychonerds" (San Francisco Shamans, "murple" etc )
Later