Alkaline solutions of pyrogallol have been used for oxygen absorption in gas analysis. Pyrogallol was also used as a developing ... Pyrogallol is an organic compound with the formula C6H3(OH)3. It is a water-soluble, white solid although samples are typically ... Pyrogallol use, e.g. in hair dye formulations, is declining because of concerns about its toxicity. Its LD50 (oral, rat) is 300 ... One manifestation is the easy C-acetylation of pyrogallol. It was once used in hair dyeing, dyeing of suturing materials. It ...

In enzymology, a pyrogallol hydroxytransferase (EC 1.97.1.2) is an enzyme that catalyzes the chemical reaction 1,2,3,5- ... Brune A, Schink B (February 1990). "Pyrogallol-to-phloroglucinol conversion and other hydroxyl-transfer reactions catalyzed by ... Other names in common use include 1,2,3,5-tetrahydroxybenzene hydroxyltransferase, 1,2,3,5-tetrahydroxybenzene:pyrogallol ... transhydroxylase, 1,2,3,5-tetrahydroxybenzene-pyrogallol hydroxyltransferase (transhydroxylase), pyrogallol hydroxyltransferase ...

In enzymology, a pyrogallol 1,2-oxygenase (EC 1.13.11.35) is an enzyme that catalyzes the chemical reaction 1,2,3- ... This enzyme is also called pyrogallol 1,2-dioxygenase. Groseclose EE, Ribbons DW (1981). "Metabolism of resorcinylic compounds ...

Surrey, Alexander R. (1946). "Pyrogallol 1-Monomethyl ether". Organic Syntheses. 26: 90-2. doi:10.15227/orgsyn.026.0090. PMID ...

Enol Pyrogallol Thiotimoline "Front Matter". Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 ...

It consists of derivatives of pyrogallol. It was discovered by German chemist Carl Reichenbach in the 1830s. Picamar can be ... According to Pastrovich, picamar is a monomethyl ether of propyl-pyrogallol (C 10H 14O 3). However, Gustav Niederist, who ...

The enzyme pyrogallol hydroxytransferase uses benzene-1,2,3,5-tetrol and benzene-1,2,3-triol (pyrogallol), whereas its two ... ISBN 978-3-527-30673-2. "P 80564 Pyrogallol hydroxytransferase small subunit". UniProtKB. Uniprot. Schink, B.; Pfennig, M. ( ...

The species tests positive with pyrogallol. It is moderately positive in response to ferric chloride. Tincture of guaiac is ...

Pyrogallol can be produced from glutaric diester. Glutaric acid may cause irritation to the skin and eyes. Acute hazards ... US 4046817, Shipchandler, Mohammed T., "Method of synthesis of pyrogallol", published 1977-09-06, assigned to IMC Chemical ...

... is the acetyl derivative of pyrogallol. It can be synthesized from pyrogallol using zinc chloride and acetic ...

In 1882 the British Journal of Photography Almanac included his new formula of pyrogallol, sulfite and citric acid in their ... The company marketed Berkeley's Sulpho-pyrogallol Developer. Berkeley displayed his landscape photographic works in exhibitions ...

It is the symmetrically dimethylated derivative of pyrogallol. It is a colorless solid, although typical samples are brown ...

Berkeley's formula contained pyrogallol, sulfite, and citric acid. Ammonia was added just before use to make the formula ... The new formula was sold by the Platinotype Company in London as Sulphur-Pyrogallol Developer. Nineteenth-century ... with his own version of collodion emulsions after Samman introduced the idea of adding dithionite to the pyrogallol developer.[ ...

Pyrogallol and pyrocatechin are among the oldest photographic developers. Polyphenols are thought to play diverse roles in the ... Most polyphenols contain repeating phenolic moieties of pyrocatechol, resorcinol, pyrogallol, and phloroglucinol connected by ...

Benzoic acid Catechol Hydrolyzable tannin Pyrogallol Syringol Syringaldehyde Syringic acid Shikimic acid Haslam, E.; Cai, Y. ( ... Heating gallic acid gives pyrogallol (1,2,3-trihydroxybenzene). This conversion is catalyzed by gallate decarboxylase. Many ... Pyrogallols, Reducing agents, Trihydroxybenzoic acids, Vinylogous carboxylic acids). ...

The developing chemistry is similar to that of catechol or pyrogallol. It is also used as a matrix in MALDI mass spectrometry ...

... can be prepared by oxidation of pyrogallol with sodium periodate. Purpurogallin is bioactive It can inhibit 2- ... Pyrogallols, All stub articles, Aromatic compound stubs). ...

The related resorcinarenes and pyrogallolarenes are produced from resorcinol and pyrogallol, respectively. The aldehyde most ... are usually required in condensation reactions with resorcinol and pyrogallol to facilitate formation of the C4v symmetric vase ...

Small amounts of hydroquinone or pyrogallol are added to inhibit polymerization of the diene. The reaction proceeds at room ...

Through testing at isobestic points, it has been determined that bromopyrogallol red is a stronger acid than Pyrogallol Red. In ... Wyganowski, C. (1984). "Effect of quaternary ammonium salts on spectrophotometric characteristic of pyrogallol red and ...

... tannin is one of the pyrogallol class of tannins (also known as hydrolysable tannin). As it tends to give a brownish ...

Adolf von Baeyer had experimented with phenols and formaldehydes in 1872, particularly Pyrogallol and benzaldehyde. He created ...

The bark and especially the fruit yield pyrogallol and catechol to dye and tan leather. Water stored in the stem is often ...

The systematic name of this enzyme class is 3,4,5-trihydroxybenzoate carboxy-lyase (pyrogallol-forming). Other names in common ... pyrogallol + CO2 This enzyme belongs to the family of lyases, specifically the carboxy-lyases, which cleave carbon-carbon bonds ...

The enzyme pyrogallol hydroxytransferase uses 1,2,3,5-tetrahydroxybenzene and 1,2,3-trihydroxybenzene (pyrogallol) to produce 1 ... The other two isomers are hydroxyquinol (1,2,4-benzenetriol) and pyrogallol (1,2,3-benzenetriol). Phloroglucinol, and its ...

... pyrogallol, and catechol. When used in low sulfite developer composition, the latter two compounds cause gelatin to harden and ...

The leaves of certain sumacs yield tannin (mostly pyrogallol-type), a substance used in vegetable tanning. Notable sources ...

9207 citations) Marklund, S.; Marklund, G. (1974). "Involvement of superoxide anion radical in autoxidation of pyrogallol and a ...

Other types of resorcinarenes include the related pyrogallolarenes and octahydroxypyridines, derived from pyrogallol and 2,6- ... Pyrogallolarenes are related macrocycles derived from the condensation of pyrogallol (1,2,3-trihydroxybenzene) with an aldehyde ...

Bogert, Marston; Ehrlich, Jacob (Mar 1919). "The synthesis of certain pyrogallol ethers, including a new acetophenetide derived ...