rhamnetinn.
/ˈramnᵻtɪn/, U.S. /ˈræmnədən/ Chemistry.
A yellow crystalline compound which occurs in various plants, esp. the common or purging buckthorn, Rhamnus cathartica.Rhamnetin is a flavonoid, the 7-methyl ether of quercetin. Formula: C16H12O7.
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styracin1838
alloxanic acid1839
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rhamnetin1858
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1858 J. Gellatly in Edinb. New Philos. Jrnl. 7 257 The pale yellow matter separated by boiling with the dilute mineral acids, according to the nomenclature in use.., should receive the name of Xanthorhamnetine, but..I propose to..call it simply Rhamnetine.
1910 E. F. Armstrong Simple Carbohydrates & Glucosides vi. 89 The fruits of the Persian berry (Rhamnus infectorius) contain a glucoside known as xanthorhamnin, which, when hydrolysed, yields rhamnetin and the two sugars rhamnose and galactose.
1934 C. C. Steele Introd. Plant Biochem. vi. xix. 211 Rhamnetin, the 7-monomethyl ether, occurs as the glycoside xanthorhamnin from ‘Persian berries’ (Rhamnus).
1993 Biochem. Systematics & Ecol. 21 415 Quercetin, rhamnetin, quercitrin and rutin significantly reduced the growth of larvae [of the European corn borer].
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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