单词 | carboxylic |
释义 | carboxylicadj. Chemistry. 1. carboxylic acid n. any organic acid containing one or more carboxyl groups (see sense 2); (also) forming the termination of names of particular acids of this kind.Originally applied by Lerch (see etymology) to one such acid; cf. quot. 1877.The simplest carboxylic acids are the members of the fatty acid series: methanoic (or formic) acid, HCOOH, ethanoic (or acetic) acid, CH3COOH, propanoic (or propionic) acid, C2H5COOH, etc. ΘΚΠ the world > matter > chemistry > organic chemistry > organic acids > [noun] > carboxylic acids > miscellaneous others urobenzoic acid1836 adipic acid1838 azelaic acid1838 isethionic acid1838 rutinic acid1845 rutic acid1848 glyoxylic acid1856 malonic acid1859 piperic acid1863 butalanine1865 methacrylic acid1865 barbituric acid1866 pichuric acid1866 carboxylic acid1868 gluconic acid1871 xylic acid1872 xylidic acid1872 aconic acid1873 formobenzoic1873 nicotinic acid1873 hydracrylic acid1877 undecylenic acid1879 isonicotinic acid1883 isatoic acid1885 linolenic acid1887 hendecenoic acid1889 heptenoic acid1889 mannonic acid1890 phenolcarboxylic acid1893 naphthenic acid1894 aldonic acid1904 naphthaleneacetic acid1917 heptanoic acid1928 hexuronic acid1928 pantothenic acid1933 neuraminic acid1942 pantoic acid1945 penicillanic acid1953 mevalonic acid1957 retinoic acid1960 isobutyric acid- 1868 A. W. Hofmann in Proc. Royal Soc. 16 303 In accordance with a principle of nomenclature which I proposed some time ago, I will designate the new acid by the name of naphthaline-carboxylic acid. 1868 A. W. Hofmann in Proc. Royal Soc. 16 445 The transformation of naphtaline [sic] into its carboxylic acid. 1877 H. Watts Dict. Chem. (new ed.) IV. 296 Carboxylic acid, C10H4O10, is known only in its salts, which are formed by oxidation of the hydrogen in the trihydro-, dihydro-, and hydro-carboxylates. 1883 Jrnl. Chem. Soc. 44 802 (heading) Conversion of phenols into nitriles and carboxylic acids. 1911 Encycl. Brit. XXII. 33/1 Cycloheptane carboxylic acid (suberanic acid), C7H13CO2H. 1959 New Biol. 30 99 The main part of the cuticle is composed of cutin; this is a polymer of high molecular weight formed from carboxylic acids. 1987 J. M. Tedder & A. Nechvatal Basic Org. Chem. (ed. 2) xii. 152 The most important reaction of a cyanide is hydrolysis to yield first the amide and then the carboxylic acid. 2001 Ann. Bot. 88 980/1 The S-type anion channels are also inhibited by diphenylamine-2-carboxylic acid. 2005 C. de Duve Singularities vi. 58 Lipoic or thioctic acid, an eight-carbon carboxylic acid bearing two thiol groups. 2. Of or containing the group —COOH; designating this group. ΘΚΠ the world > matter > chemistry > organic chemistry > organic groups > [adjective] > carboxyl groups carboxylic1881 1881 H. C. Jones Text-bk. Pract. Org. Chem. 61 It is only the carboxylic hydrogen that can be replaced by metals to form salts. 1881 Science 9 Apr. 168/1 When the molecule loses calcium and phosphoric acid the carboxylic groups appear. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) vi. 146 The basicity of an acid depends on the number of such carboxylic groups present in the molecule. 1972 Materials & Technol. V. xiv. 482 Recently, carboxylated NBR has been introduced... The carboxylic groups enhance solvent resistance. 2004 W. Carruthers & I. Coldham Mod. Methods Org. Synthesis (ed. 4) i. 25 Reduction of the ester group in the presence of the carboxylic amide..gave iridomyrmecin. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online December 2021). < adj.1868 |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。