“ TROPINE, C8H15NO, a base formed together with tropic acid, C9H10O3, in the hydrolysis of the alkaloid atropine (K. Kraut, Ann., 1863, 128, p. 280; 1865, 133, p. 87) . It crystallizes in plates which melt at 63° C. and boil at 233° C.; it is very hygroscopic and easily soluble in water. It is an optically inactive, strongly alkaline tertiary base. On heating with sodium in amyl alcoholic solution it it transformed into a stereoisomer, identical with the ψ-tropine obtained by hydrolysing tropa-cocaine with hydrochloric acid. ”

“ The most important of the oxidation products of trop1ne is tropinone, C8H13NO, which is a ketone containing the grouping —CH2⋅⋅CO⋅CH2-since it yields a di-isonitroso derivative, a dibenzal derivative, and also forms mono- and di-oxalic esters. It is a strong base and has a powerful reducing action. ”