Ridding it of the other poisonous alkaloids is going to be a challenge.
One thing unique about bufotenine is that it's quite water soluble, even as freebase.
So at least you could freebase the substance in water, and then filter out whatever precipitates out. Bufotenine is surely not going to precipitate out. SWIM has tried to precipitate it from water and it doesn’t work. If it did, that would be a very easy way to extract it from cebil, but it doesn’t work.
Another thing that is somewhat unique to bufotenine is that it’s insoluble in room temperature xylene, while many other alkaloids are soluble in it. You could wash the freebased substance in xylene, and that should dissolve quite a bit of other alkaloids leaving behind the bufotenine and maybe a few other alkaloids.
After washing with xylene, you could then boil the insoluble stuff (which contains the bufotenine) in the xylene. Bufotenine will dissolve in the boiling xylene very well, but a lot of other alkaloids will not, they will burn, vaporize away, or not dissolve at all.
So I think those three things would get you closer to obtaining bufotenine from it. Heck it might even get you pure bufotenine. It’s possible.
So to recap:
1 – Dissolve in water, and freebase. Filter out the solids. Bufotenine stays dissolved in the water. Discard the solids. Evaporate the water.
2 – Wash solids with xylene. Bufotenine stays un-dissolved. Discard the xylene.
3 – Boil in new xylene. Bufotenine dissolves in the xylene. Decant while boiling hot and discard the solids. Let sit overnight. Bufotenine crystals form. Pour off the xylene to leave the bufotenine crystals.
If there’s any bufotenine present, this will work to isolate it pretty well. But there’s no telling what else will come through with the bufotenine. I’d be very cautious with it.
You may remember me as 69Ron. I was suspended years ago for selling bunk products under false pretenses. I try to sneak back from time to time under different names, but unfortunately, the moderators of the DMT-Nexus are infinitely smarter than I am.
If you see me at the waterpark, please say hello. I'll be the delusional 50 something in the American flag Speedo, oiling up his monster guns while responding to imaginary requests for selfies from invisible teenage girls.