rhamnoxanthin
now rare
noun
A bitter, yellow, crystalline compound isolated from the bark of alder buckthorn, Rhamnus frangula.
- Rhamnoxanthin is now more usually known as frangulin A. Chemical name: emodin-3-rhamnoside; C21H20O9..
Origin
Mid 19th century. After German Rhamno-Xanthin.