533. REMIJIA.—CUPREA BARK. The bark of Remij'ia peduncula'ta Triana and of Remijia purdiea'na Weddell, resembling cinchona in physical properties and constitution. A copper-red bark from the United States of Colombia, grown at an altitude of from 3000 to 6000 feet, usually in flat or curved pieces; odor slight; taste bitter. Quinine is contained in this bark to the amount of 0.5 to 2.5 per cent., but no cinchonidine is found; homoquinine—a compound of quinine and cupreine—is also a constituent. Remijia bark is largely imported by manufacturers; it was said that the importations of this bark at one time exceeded in amount the entire importations of all the cinchona barks, by reason of its cheapness for the manufacture of quinine. Cinchonamine, C19H24N2O, is one of the principal products of R. purdieana, the bark from which does not respond to Grahe's test.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.