I know for a fact that San Pedro has active alkaloids in it other than mescaline which are psychoactive.
You can do an alkaloid extraction on San Pedro. If your alkaloids are hydrochlorides then you can separate the mescaline from the other alkaloids by dissolving the alkaloid mix in acetone. The acetone will only dissolve the non-mescaline alkaloids. You can then filter out the mescaline HCl, evaporate, and you're left with the other alkaloids.
There are at least two non-mescaline alkaloids present that are active that are soluble in acetone as hydrochlorides. One is a sedative with effects similar to harmaline, and it is psychoactive, very fast acting, and of short duration. The other alkaloid is a stimulant similar to mescaline, and actually a very beautiful experience.
When you take the acetone soluble hydrochlorides from San Pedro, after the mescaline is removed, you can very distinctly feel two separate peaks from two separate alkaloids present. The first peak is from the harmaline like sedative and the second peak is from the mescaline like stimulant. Both are psychoactive.
The mescaline like stimulant is shorter acting than mescaline with a duration of about 4 hours. It peaks after about 3 hours. It’s very euphoric. But SWIM has not experienced visual effects from it. Maybe at higher doses it has visual effects.
The sedative definitely has visual effects, but they are very different from mescaline. The sedative only lasts about 2 hours or so if I recall correctly. It peaks after about 1 hour.
So I think this is a worthwhile venture. The stimulant, whatever it is, is very pleasant and SWIM would love to be able to isolate it from the sedative. The sedative seems to have MAOI activity like harmaline does. In tests SWIM performed using the non-mescaline alkaloids taken along with LSA, the LSA peaked after 1 hour and was about 5-10 times stronger than it should have been, which is exactly when the sedative peaks, so I believe the harmaline like sedative is also a powerful MAOI, more powerful than harmaline.