rutin

[root-n]

noun Pharmacology.

a bright yellow or greenish-yellow substance, C27H30O16, obtained chiefly from buckwheat, and used in the treatment of capillary fragility.

Origin of rutin

< German Rutin (1842) < New Latin Rut(a) rue, a source of the substance (see rutaceous) + German -in -in²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Rutin (or rutinic acid), according to Weiss, is a glucoside which exists in the form of fine needles, bright yellow in color.
The Medicinal Plants of the Philippines
T. H. Pardo de Tavera