Though by an organic solubility table in the handbook of chemistry and physics it shows that mescaline is not soluble in petroleum ether. It may therefore be possible to treat the cactus with distilled naptha first, which, might dissolve some of the other alkaloids and terpines in the plant material. The mescaline is soluble in alcohol so it might be possible to extract the mecsaline from the treated plant material with alcohol. The only other compound I have been able to locate in trichocereus pachanoi is analonidine. I have not been able to find any data on analonidine at this point. Analonidine is present in lophophora williamsii as well so it make contribute to the effects or the chemical mixture in peyote and pedro whether good or bad.