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Catechol (/ ˈ k æ t ɪ tʃ ɒ l / or / ˈ k æ t ɪ k ɒ l /), also known as pyrocatechol or 1,2-dihydroxybenzene, is an organic compound with the molecular formula C 6 H 4 (OH) 2. It is the ortho isomer of the three isomeric benzenediols .
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In 1866, Henry Watts listed catechol as oxyphenic acid. [7] In 1867, August Kekulé called catechol bihydroxylbenzol (dihydroxybenzene). [8] By 1868, catechol was being listed as pyrocatechol. [9] By 1879, the Journal of the Chemical Society was recommending that catechol be called "catechol", and in the following year, it was listed as such ...
Their investigation constitutes a major chapter in the history of physiology, biochemistry, and pharmacology. Adrenaline was the first hormone extracted from an endocrine gland and obtained in pure form, before the word hormone was coined. [2] Adrenaline was also the first hormone whose structure and biosynthesis was discovered.
In humans, catechol-O-methyltransferase protein is encoded by the COMT gene. [8] Two isoforms of COMT are produced: the soluble short form (S-COMT) and the membrane bound long form (MB-COMT). As the regulation of catecholamines is impaired in a number of medical conditions, several pharmaceutical drugs target COMT to alter its activity and ...
WordReference is an online translation dictionary for, among others, the language pairs English–French, English–Italian, English–Spanish, French–Spanish, Spanish–Portuguese and English–Portuguese.
Codex Manesse, fol. 292v, "The Schoolmaster of Esslingen" (Der Schulmeister von Eßlingen). A catechism (/ ˈ k æ t ə ˌ k ɪ z əm /; from Ancient Greek: κατηχέω, "to teach orally") is a summary or exposition of doctrine and serves as a learning introduction to the Sacraments traditionally used in catechesis, or Christian religious teaching of children and adult converts. [1]
The French Wikipedia (French: Wikipédia en français) is the French-language edition of Wikipedia, the free online encyclopedia. This edition was started on 23 March 2001, two months after the official creation of Wikipedia. [1]