Examples from the Web for cinchonidine
It is nothing more than quinidine, or cinchonidine, or a mixture of both.
Tartrate of potash and soda indicate, under these circumstances, only the presence of cinchonidine.
If it is chemically pure, cinchonidine belongs to the non-fluorescent alkaloids.
Red bark contains not only quinine and cinchonine, but also cinchonidine.
Cinchonidine, when heated with potassium hydrate, yields quinoline also, and with nitric acid the same products as cinchonine.