1853 Pasteur in 13 374 The other base, to which I give the name of cinchonidine.
1866 H. E. Roscoe xl. 350 The bark of this species of trees..contains 2 alcaloids, quinine and cinchonine, and each of these yields 2 isomeric modifications, quinidine and quinicine; cinchonidine and cinchonicine.