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barbituric acid

noun
1.
a white, crystalline, slightly water-soluble powder, C 4 H 4 N 2 O 3 , used chiefly in the synthesis of barbiturates.
Also called malonylurea.
Origin
1865-1870
1865-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for barbituric-acid

barbituric acid

/ˌbɑːbɪˈtjʊərɪk/
noun
1.
a white crystalline solid used in the preparation of barbiturate drugs. Formula: C4H4N2O3 Systematic name 2,4,6-trioxypyrimidine Also called malonylurea
Word Origin
C19: partial translation of German Barbitursäure, perhaps from the name Barbara + uric + Säure acid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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barbituric-acid in Medicine

barbituric acid bar·bi·tu·ric acid (bär'bĭ-tur'ĭk, -tyur'-)
n.
An organic acid used in the manufacture of barbiturates.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for barbituric-acid

barbituric acid

an organic compound of the pyrimidine family, a class of compounds with a characteristic six-membered ring structure composed of four carbon atoms and two nitrogen atoms, that is regarded as the parent compound of the barbiturate drugs. It is used in the production of riboflavin, a nutritional factor (see vitamin B2).

Learn more about barbituric acid with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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