Wiktionary
n. (context organic compound English) A glycoside, obtained from ''Digitalis purpurea'', that is used as a detergent and whose aglycone is digitogenin.
Wikipedia
Digitonin is a steroidal saponin (saraponin) obtained from the foxglove plant Digitalis purpurea. Its aglycone is digitogenin, a spirostan steroid. It has been investigated as a detergent, as it effectively water-solubilizes lipids. As such, it has several potential membrane-related applications in biochemistry, including solubilizing membrane proteins, precipitating cholesterol, and permeabilizing cell membranes.
Digitonin is sometimes confused with the cardiac drug digoxin (sometimes also called digitalis or digitoxin) and both can be extracted from the same source.
Usage examples of "digitonin".
Digitonin, which is a cardiac depressant, containing none of the physiological action peculiar to Digitalis, and is identical with Saponin, the chief constituent of Senega root.