| 单词 | quinovic | 
| 释义 | quinovicadj. Chemistry.    quinovic acid n. 		 (a) †= quinovin n.   (obsolete);		 (b) a bitter, crystalline acid of which glycosides are found in cinchona bark and various other plants.Quinovic acid has a pentacyclic structure. Formula: C30H46O5. ΚΠ 1830    A. H. Lincoln tr.  L. N. Vauquelin Dict. Chem. 61  				Acid Kinovic... It is white, light, flosculous [perh. read flocculous], scarcely soluble in water. 1838    T. Thomson Chem. Org. Bodies 805  				The kinovic acid of Pelletier and Caventou has considerable analogy with the oily acids. 1868    H. Watts Dict. Chem. V. 31  				Quinovic Acid..was originally used as a synonym for quinovin or quinova-bitter, but is now applied..to an acid produced, together with quinova-sugar, by the decomposition of quinovin. 1950    Thorpe's Dict. Appl. Chem. 		(ed. 4)	 X. 686/2  				Quinovic acid..has been isolated from cinchona bark. 1958    Biogr. Mem. Fellows Royal Soc. 4 344  				Still another of the polycyclic compounds studied by Wieland was quinovic acid, found in the mother liquors from the manufacture of quinine. 2001    N. Michalun  & M. V. Michalun Milady's Skin Care & Cosmetic Ingredients Dict. 		(new ed.)	  ii. 262  				Important constituents of tormentil extract include tannin, phytosterols, flavonoids, chinovic acid, tormentoside, and pseudosaponine. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). <  | 
	
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