单词 | comenic |
释义 | comenicadj. Chemistry. comenic acid n. a pale yellow crystalline acid produced by the decomposition of meconic acid.Systematic name: 3-hydroxy-4-oxo-4H-pyran-6-carboxylic acid, C6H4O5. ΚΠ 1839 A. Weinlig Pflanzenchemie 68 (heading) Komensäure (Metamekons., Paramekons., acid. comenicum etc., acide comenique etc., comenic acid etc.). 1842 T. Graham Elements Chem. iii. viii. 937 Comenic acid, 2HO,C12H2O8, a bibasic acid, which crystallizes in very hard crusts or crystalline grains, with nothing more than its basic water. 1905 Jrnl. Amer. Chem. Soc. 27 964 Liebig's discovery in 1833 of the true relationship between meconic, comenic and pyrocomenic (synonymous with pyromeconic) acids. 2008 J. Burgess & M. Rangel in Adv. in Inorg. Chem. 60 172 Hydroxypyranones such as maltol, kojic acid, and comenic acid can be converted into hydroxypyridinones by reaction with ammonia. This entry has been updated (OED Third Edition, June 2017; most recently modified version published online March 2022). < adj.1839 |
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