CINCHONINE

Syn. Cinch on i a . C 20 H 24 N 2 O. This alkaloid abounds most in the paler varieties of the cinchona barks. It occurs in clear, colourle , four-sided prisms, which are soluble in 30 parts of water, and in about 400 parts of ether and 120 of spirits of wine. With acids it forms soluble salts, which do not fluoresce in solution, and are turned lightish brown-yellow by the chlorine and ammonia tests. Of its salts, the hydriodate is readily soluble in water, and still more so in alcohol, whether dilute or strong. Cinchonine may be prepared from its sulphate or disulphate in the same way as quinine.