barbituric acid

barbituric acid
A crystalline dibasic acid from which barbital and other barbiturates are derived; has no sedative action. SYN: malonylurea.

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bar·bi·tu·ric acid .bär-bə-.t(y)u̇r-ik- n a synthetic crystalline acid C4H4N2O3 that is a derivative of pyrimidine also any of its acid derivatives of which some are used as hypnotics

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bar·bi·tur·ic ac·id (bahr-bĭ-tūrґik) the parent compound of the barbiturates, 2,4,6-trioxohexahydropyrimidine. It is not itself a central nervous system depressant; the presence of alkyl or aryl groups at position 5 gives its derivatives their sedative and hypnotic effects.

Medical dictionary. 2011.

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  • Barbituric acid — IUPAC name …   Wikipedia

  • barbituric acid — [bär΄bə tyoor′ik, bär΄bətoor′ik] n. [< Ger barbitursäure (< ModL Usnea barbata, lit., bearded moss + ursäure, a ureide of acid character < urea, urea + säure, acid) + IC] a white, odorless, crystalline acid, C4H4O3N2, used in the… …   English World dictionary

  • Barbituric acid — Bar bi*tu ric ac id (Chem.) A white, crystalline substance, {CH2(CO.NH)2.CO}, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea. [1913 Webster] …   The Collaborative International Dictionary of English

  • barbituric acid — bar′bitu′ric ac′id [[t]ˈbɑr bɪˈtʊər ɪk, ˈtyʊər , ˌbɑr [/t]] n. chem. pha a white, crystalline, slightly water soluble powder, C4H4N2O3, used chiefly in the synthesis of barbiturates • Etymology: 1865–70; < F barbiturique < G Barbitur(sӓure) …   From formal English to slang

  • barbituric acid — barbitūro rūgštis statusas T sritis chemija atitikmenys: angl. barbituric acid rus. барбитуровая кислота ryšiai: sinonimas – 2,4,6(1H,3H,5H) pirimidintrionas …   Chemijos terminų aiškinamasis žodynas

  • barbituric acid — noun Etymology: part translation of German Barbitursäure, irregular from the name Barbara + International Scientific Vocabulary uric + German Säure acid Date: 1866 a synthetic crystalline acid C4H4N2O3 derived from pyrimidine …   New Collegiate Dictionary

  • barbituric acid — n. Chem. an organic acid from which various sedatives and sleep inducing drugs are derived. Etymology: F barbiturique f. G Barbitursaumlure (Saumlure acid) f. the name Barbara …   Useful english dictionary

  • barbituric acid — synthetic crystalline acid, substance from which several sedative drugs are derived …   English contemporary dictionary

  • barbituric acid — [ˌbα:bɪ tjʊərɪk, tʃʊərɪk] noun Chemistry a synthetic organic compound from which the barbiturates are derived. Origin C19: from Fr. barbiturique, from Ger. Barbitursäure, from the given name Barbara + Säure acid …   English new terms dictionary

  • barbituric acid — /babəˌtjʊərɪk ˈæsəd/ (say bahbuh.tyoouhrik asuhd) noun a heterocyclic compound, C4H4N2O3.2H2O, from which several hypnotic and sedative drugs are derived; malonyl urea. {German Barbitursäure, perhaps from the name Barbara + ur(ic) + Säure acid} …  

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