purpurogallin

purpurogallin

[‚pər·pyə·rō′gal·ən]
(organic chemistry)
C11H8O5 A red, crystalline compound, the aglycon of several glycosides from nutgalls; decomposes at 274-275°C; soluble in boiling alcohol, methanol, and acetone; used as an antioxidant or to retard metal contamination in hydrocarbon fuels or lubricants.
References in periodicals archive ?
The absorbancy of the purpurogallin formed was taken at 420 nm at time (40, 100s) for polyphenol oxidase assay (Kar and Mishra, 1976).
After incubated for 2h, the purpurogallin formed was extracted with 35 mL ether and determined by taking the absorbancy at 420 nm.
4] and the purpurogallin was extracted by ethyl ether.
The spectrophotometer was set on 420 nm and the concentration of purpurogallin in 1-butanol was measured colorimetrically.
1993) Purpurogallin as an antioxidant protector of human erythrocytes against lysis by peroxyl radicals.