aloin
/ˈaləʊɪn/(also aloine) Chemistry
noun
Any of several organic compounds isolated from the sap of aloes; (in later use) specifically an anthraquinone which forms bitter-tasting lemon-yellow crystals and has purgative and cathartic effects.
- Chemical name: 10-glucopyranosyl-1,8-dihydroxy-3-(hydroxymethyl)-9-(10H)-anthracenone; C21H22O9..
Origin
Early 19th century; earliest use found in Constantine Rafinesque (1783–1840). Originally from German Aloine from Aloe + -ine.