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单词 quinamidine
释义

quinamidinen.

Brit. /kwᵻˈnamᵻdiːn/, U.S. /kwənˈæməˌdin/
Origin: A variant or alteration of another lexical item; modelled on a German lexical item. Etymon: quinamine n.
Etymology: < quinamine n., with insertion of -id- (compare -idine suffix), after German Chinamidin (O. Hesse 1881, in Ann. der Chem. 207 293). Compare quinamicine n.
Chemistry. Now rare.
An isomer of quinamine prepared by reaction with an acid.
ΚΠ
1881 Jrnl. Chem. Soc. 40 925 Quinamidine, C19H24N2O2.—The best method of preparing this body is as follows.
1913 T. A. Henry Plant Alkaloids 173 The salts are crystalline and soluble in water. Strong aqueous hydrochloric acid in the cold converts the base into the isomeric quinamidine.
1939 Thorpe's Dict. Appl. Chem. (ed. 4) III. 168/2 Very mild treatment, such as boiling with 1% sulphuric acid,..suffices to isomerise quinamine to quinamidine.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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n.1881
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