“…So far, few studies have been addressed to non-volatile constituents. The first chemical study was done on M. chamissonis, and glucose, xanthamicrol, micromerol, micromeritol, hentriacontan, fitosterol, palmitic acid, arachidic acid and behenic acid were isolated (Power & Salway, 1908). From M. benthami, betulinic acid, oleanolic acid, ursolic acid, micromeric acid, 19a-hydroxyursolic acid, b-sitosterol, betulin, lupeol, a-amyrin, b-amyin, erythrodiol and uvaol were isolated, and, from the M. pineolens, oleanolic acid, ursolic acid, betulinic acid, 3b-hydroxyurs-D 12,20(30) dien-28-oic acid, and 3b,19a-dihydroxyursolic acid, as well (Breton, Fraga, Jaraiz, & Gonzales, 1969).…”