Hi Folks.
First a bit of background.
I did a vinegar boil (actually 2 hours in slow cooker) on 50g of dried caapi leaves and then after some serious filtering I precipitated the resulting liquid with lye/sodium carbonate.
Something dropped out of the solution which I did another 2 A/B extractions on.
I ended up with a brownish substance that sat at the bottom of my jar which looked a bit like like frog spawn. I'm sure it was some kind of Alkaloid and not plant material as I filtered it loads when it was dissolved in acid.
I then washed it a lot of times with distilled water allowing it to settle out and removing the water from the top with a siphon each time.
Finally I dried it out and ended up with 400mg of fine brown powder which is shown in the picture. I think the white powder around the rim might be some excess sodium carbonate/lye but i did wash it a lot of times so maybe not.
The question is what is it? Can I do some tests to find out?
Any advice greatly appreciated.

Harmalas probably.
If you got UV torch, dissolve some of this in vinegar and point the light at it.
Also, dont consume this unless you do another AB with food safe reagents (Carbonate instead of Lye)

Thanks for the quick reply Kumarajiva
I don't have a torch but I might get one.
Just on the part about not using lye, I found that I couldn't add enough sodium carbonate to get anything to precipitate. I put loads in, which is why I added lye (a very small amount).
Is this a normal problem?

Should have had some precipitation with carbonate.
Harmine drops out even with bicarbonate.
Maybe too much liquid used?
Dissolve all of your yield in minimal amount of hot vinegar and try carbonizing again (add slowly so it wont run away)

Thanks for the advice.
I'll report back with the results in a few days.