Trichocereus pachanio "San Pedro contains appreciable mescaline (Crosby, D.M. McLaughlin, J.L. 36, 417 (1976)."

Pummangura, S. McLaughlin, J.L., Schifferdecker, R.C. "Cactus Alkaloids. LI. Lack of Mescaline Translocation in Grafted Trichocereus", 1981.

Experimental:

Plant Material- Small plants of Trichocereus pachanoi (control) along with others were obtained commercially and maintained under greenhouse conditions. The Cactus was sliced into small peices, frozen, and freeze-dried. The Sample were pulverized in a Wiley Mill.
Exactly 5.00g of sample was extracted with basic chloroform and acid-base partitioning. The extract was dissolved in 0.8mL of methanol. The Methanol-Alkaloid-extracts were analyzed using thin-layer and gas-liquid chromatography mescaline was detected by gas-liquid chromatography in the trichocereus pachanoi sample which agreed with the tlc analysis.