5- -1,2,3-benzenetriol

Qin L, Tripathi G N R and Schuler R H 1987 Radiolytic oxidation of 1,2,4-benzenetriol an application of time-resolved resonance Raman spectroscopy to kinetic studies of reaction intermediates J. Chem. Phys. 

Polyhydric phenols with more than two hydroxy groups (ie, the three positional isomers of benzenetriol, the three isomeric benzenetetrols, benzenepentol [4270-96-6] and benzenehexol [608-80-0]) are discussed in this article. The benzenediols are catechol, resorcinol, and hydroquinone (see Hydroquinone, RESORCINOL, AND CATECHOL). 

The following names of the benzenetriols have been used. 

Chemical Designations - Synonyms 1,2,3-Benzenetriol Pyrogallol 1,2,3-Trihydroxybenzene ChemicalFormuia l,2,3-C(H3(OH)3. 

Write structural formulas for each of the following compounds (a) Pyrogallol (1,2,3-benzenetriol) (c) 3-Nitro-1-naphthol... 

Jain RK, JH Dreisbach, JC Spain (1994) Biodegradation of /)-nitrophenol via 1,2,4-benzenetriol by an Art/iro-bacter sp. Appl Environ Microbiol 60 3030-3032. 

Meulenberg R, M Pepi, JAM de Bout (1996) Degradation of 3-nitrophenol by Pseudomonas putida B2 occurs via 1,2,4-benzenetriol. Biodegradation 1 303-311. 

DNA breaks in human MCF-7 cells [65], Damaging effect of menadione was probably mediated by hydroxyl radicals as it was demonstrated by ESR spin-trapping method. The analogs of menadione 2-methylmethoxynaphthoquinone and 2-chloromethylnaphtho-quinone also stimulated DNA damage through the formation of superoxide and other free radicals [66]. Similar effects have been shown for hydroquinone, catechol, benzoquinone, and benzenetriol [67,68]. 

Benzenediol, h86 Benzenemethanol, b78 1,2,3-Benzenetriol, t317 Benzenethiol, tl 56 Benzhydrazide, b71 Benzhydrol, d760 Benzhydrylamine, d761... 

Photolytic. Photolysis of 2,4-D in distilled water using mercury arc lamps (A, = 254 nm) or by natural sunlight yielded 2,4-dichlorophenol, 4-chlorocatechol, 2-hydroxy-4-chlorophenoxyacetic acid, 1,2,4-benzenetriol, and polymeric humic acids. The half-life for this reaction is 50 min (Crosby and Tutass, 1966). A half-life of 2 to 4 d was reported for 2,4-D in water irradiated at 356 nm (Baur and Bovey, 1974). 

Benzene thiophosphoric acid, see EPN 1,2,4-Benzenetriol, see 2,4-D Benzidine, see Aniline, 3,3 -Dichlorobenzidine 1 -(2-Benzimidazolyl) -3-/ -butylurea, see Benomvl Benzo [ a] anthracene-7,12-dione, see Benzo [alanthracene... 

PYROGALLIC ACID 1.2.3- Benzenetriol, Pyrogaliol, 1.2.3- Trihydroxy-benzene NL 1 1 0 ... 

Rao. G.S. (1991) Hematin catalysed autooxidation of hydroquinone or 1,2,4-benzenetriol. Chem.-biol. Interact., 80, 339-347... 

SAMPLE SOLUTION (a) Like the dihydroxybenzenes, the isomeric trihydroxy-benzenes have unique names. Pyrogallol, used as a developer of photographic film, is 1,2,3-benzenetriol. The three hydroxyl groups occupy adjacent positions on a benzene ring. 

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