[sing-kon-i-deen, -din, sin-]
- a white, crystalline, slightly water-soluble, levorotatory alkaloid, C19H22N2O, stereoisomeric with cinchonine and similarly derived, used chiefly as a quinine substitute.
Origin of cinchonidine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cinchonidine
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.
Dr de Vrij states that the substance known under this name is a mixture of hydrochlorate of cinchonidine and of cinchonine.
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.
- an alkaloid that is a stereoisomer of cinchonine, with similar properties and uses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012