pyrogallol


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Related to pyrogallol: purpurogallin

pyrogallol

(pī′rō-găl′ôl′, -ōl′, -ŏl′, -gô′lôl′, -lōl′, -lŏl′)
n.
A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid.

py′ro·gal′lic (-găl′ĭk, -gô′lĭk) adj.

pyrogallol

(pī″rō-găl′ōl″)
C6H6O3; a toxic chemical derived from gallic acid.

pyrogallol

; pyrogallic acid non-self-limiting, topical, keratolytic/caustic organic acid (also destroys fine nerve endings in skin); formerly used to treat verrucae; application causes a dense black skin stain; prepared as 40% paste in white soft paraffin (WSP) (pyrogallol ointment), or as 20% ointment with 20% wheat germ oil in WSP (WP ointment); Caution: it should be used with caution, i.e. on healthy feet, to a maximum of three consecutive applications, and never on patients with peripheral vascular disease, neuropathy or any other form of reduced tissue viability or compromised healing (e.g. diabetes); can cause haemolysis if applied to wide areas of skin
References in periodicals archive ?
This high value implies that, when R = phenyl, the substituent and the pyrogallol ring may not rotate around that bond and remain in their original positions with respect to the bond as the compound is assembled.
A ratio of 1:1 hexane: DEE extracted pyrogallol, acetosyringone and most of the syringaldehyde.
All three hydroxyl groups in the pyrogallol molecule act as hydrogen bond donors with three N atoms each from different HMTA molecules acting as acceptors.
Sun CQ, Gao Q and Liu LL: Adsorptive stripping measurements of germanium(IV) in the presence of pyrogallol.
2008) showed that fractions like catechins, pyrogallol and flavonoids decrease production of quorum-sensing based virulence factors in bacteria like aeruginosa, Pseudomonas and Vibrio harveyi.
The superoxide radical-scavenging activity was estimated at 25[degrees]C using spectrophotometric monitoring of the inhibition of pyrogallol autoxidation, as previously described by Marklund and Marklund (1974) with some modifications.
The concentrations in the samples were measured by spectrophotometric absorbance to 760 nm using ethanol: water as blank and pyrogallol as standard.
Involvement of the superoxide anion radical in the autooxidation of pyrogallol and a convenient assay for superoxide dismutase.
73; Pyrogallol, 0; Caffeic, 0; Phenol, 53; Daidzin, 33; Rutin, 46; P-Coumaric, 61; Genistein, 179; Salicylic, 137; Ferulic, 93; Cinnamic, 241; Quercetin, 19; Euganol, 3; Chrysin, 6; Galangin, 2 and Pinostrobin, 11.
Pyrogallol and hydroquinone expressed their toxicity by forming a reactive oxygen species that included a hydroxy radical that caused deprotonation of the substrates and thus degraded deoxyrybose [71].
8] Pyrogallol is autoxidized rapidly in alkaline solution in the presence of superoxide anion to intermediate products and the solution first becomes yellow-brown with a maximum absorbance at 420 nm.