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alloxan
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alloxan
alloxan Chem. (æˈlɒksən) [f. allantoin) + oxalic) + -an, ‘so named by Liebig and Wöhler in 1838, because it contains the elements of allantoin and oxalic acid.’ H. E. Roscoe.] An organic compound C4H2N2O4 crystallizing in large efflorescent rectangular prisms; one of the oxidation products of uric a...
Oxford English Dictionary
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Alloxan
Alloxan, sometimes referred to as alloxan hydrate, is the name of the organic compound with the formula OC(N(H)CO)2C(OH)2. Studies suggests that alloxan does not cause diabetes in humans.
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Mesoxalic acid
Synthesis
Mesoxalic acid can be obtained synthetically by hydrolysis of alloxan with baryta water, by warming caffuric acid with lead acetate solution,
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Murexide
It may also be prepared by digesting alloxan with alcoholic ammonia.
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alloxanic
alloxanic, a. Chem. (æləkˈsænɪk) [f. as prec. + -ic.] Of alloxan, as in alloxanic acid, a bi-basic acid, C4H4N2O5 = alloxan + H2O.1863 Watts Dict. Chem. I. 137 Alloxanic acid forms hard white needles arranged in radiated groups or warty masses.
Oxford English Dictionary
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Friedrich Wilhelm Hermann Delffs
He main research dealt with investigations of uric acid, fumaric acid, oenanthic ether, sorbin, laurin, molybdate of ammonia and alloxan.
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allituric
allituric, a. Chem. (ælɪˈtjʊərɪk) [f. alloxan) whence obtained by Schlieper in 1848 (+ -it- meaningless) + uric.] In Allituric acid, a product of the disintegration of alloxantin.1863–79 Watts Chem. Dict.
Oxford English Dictionary
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Purpuric acid
Purpuric acid is a nitrogenous acid related to barbituric acid that yields alloxan and uramil upon hydrolysis.
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alloxantin
alloxantin Chem. (æləkˈsæntɪn) An organic compound, C8H4N4O7, crystallizing in small, 4-sided, oblique rhombic prisms; consisting of two molecules of alloxan minus 1 atom of oxygen, OC.2(NH) = 2 (OC).COC.2(OC) = 2(NH).CO.1853 Thudichum Urine 81 On dissolving uric acid in dilute nitric acid, alloxant...
Oxford English Dictionary
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四氧嘧啶
1838年德国化学家维勒和李比希再次发现它将其命名为Alloxan。Alloxan这个词由Allantoin(尿囊素)和Oxalsäure(草酸)合并而来。
合成
最初的四氧嘧啶由硝酸氧化尿酸制得,也可由三氧化铬氧化巴比妥酸制得
。
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Violuric acid
It can also be produced by condensation of alloxan with hydroxylamine. as typical for forming the oxime of other carbonyl compounds.
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mesoxalic
mesoxalic, a. Chem. (mɛsɒkˈsælɪk) [f. meso- + oxalic a.] mesoxalic acid: a dibasic acid obtained from alloxan. Hence mesoxalate (mɛˈsɒksəleɪt), a salt of mesoxalic acid. Also mesoxalyl (mɛˈsɒksəlɪl), the radical of alloxan (Syd. Soc. Lex. 1890); attrib. in mesoxalyl-urea, a synonym of alloxan (ibid....
Oxford English Dictionary
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Dihydroxymalonic acid
Synthesis
Dihydroxymalonic acid can be obtained synthetically by hydrolysis of alloxan with baryta water, by warming caffuric acid with lead acetate solution
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