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guanidine

guanidine

guanidine Sentence Examples

  • By using urea, guanidine, thiourea and related compounds instead of amidines, one obtains the uracils.

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  • When heated with ammonia it yields guanidine, and on boiling with alcoholic potash it yields potassium carbonate.

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  • Guanidine >>

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  • When heated for some time with water to 140° C. in a sealed tube, it is transformed into ammonium thiocyanate, a similar result being obtained by heating the base alone for some hours to 160-170° C. On heating alone for some hours to r70-180° C. it is converted into guanidine thiocyanate.

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  • GUANIDINE, CN 3 H 5 or HN: C(NH 2) 2j the amidine of amidocarbonic acid.

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  • Many derivatives of guanidine were obtained by J.

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  • By the action of nitric acid on guanidine in the presence of sulphuric acid, nitroguanidine, HN: C(NH 2) NH NO 2 (a substance possessing acid properties) is obtained; from which, by reduction with zinc dust, amidoguanidine, HN :C(NH 2) NH NH 2, is formed.

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  • By fusing guanidine with urea, dicyandiamidineH 2 N (HN): C NH CO NH 21 is formed.

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  • Aniline combines directly with alkyl iodides to form secondary and tertiary amines; boiled with carbon disulphide it gives sulphocarbanilide (diphenyl thio-urea), CS(NHC 6 H 5) 2, which may be decomposed into phenyl mustard-oil, C 6 H 5 CNS, and triphenyl guanidine, C 6 H 5 N: C(NHC6H5)2.

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  • ADDITIONAL MONITORING OF YOUR DOSE OR CONDITIONS may be needed if you are taking isoniazid, guanidine, or an oral anticoagulant.

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  • By using urea, guanidine, thiourea and related compounds instead of amidines, one obtains the uracils.

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  • The dihydro derivatives are most probably those compounds which are formed in the condensation of acidyl derivatives of acetone, with urea, guanidine, &c. Tetrahydropyrimidines are obtained by the action of amidines on trimethylene bromide: Br(CH 2) 3 Br+C 6 H 5 C (:NH) NH 2 = 2HBr+C 4 H 7 N 2 (C 6 H 5) [2].

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  • Uracil and its homologues may be obtained in many cases from the hydrouracils by the action of bromine, and subsequent elimination of the elements of hydrobromic acid; or by the condensation of aceto-acetic ester and related substances with urea, thiourea, guanidine, &c. Uracil, C4H402N2, crystallizes in colourless needles, is soluble in hot water and melts with decomposition at 335° C. Hydrouracil, C4H602N2, is obtained by the action of bromine and caustic alkalis on succinamide (H.

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  • When heated with ammonia it yields guanidine, and on boiling with alcoholic potash it yields potassium carbonate.

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  • When heated for some time with water to 140° C. in a sealed tube, it is transformed into ammonium thiocyanate, a similar result being obtained by heating the base alone for some hours to 160-170° C. On heating alone for some hours to r70-180° C. it is converted into guanidine thiocyanate.

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  • GUANIDINE, CN 3 H 5 or HN: C(NH 2) 2j the amidine of amidocarbonic acid.

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  • Many derivatives of guanidine were obtained by J.

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  • By the action of nitric acid on guanidine in the presence of sulphuric acid, nitroguanidine, HN: C(NH 2) NH NO 2 (a substance possessing acid properties) is obtained; from which, by reduction with zinc dust, amidoguanidine, HN :C(NH 2) NH NH 2, is formed.

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  • By fusing guanidine with urea, dicyandiamidineH 2 N (HN): C NH CO NH 21 is formed.

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  • Aniline combines directly with alkyl iodides to form secondary and tertiary amines; boiled with carbon disulphide it gives sulphocarbanilide (diphenyl thio-urea), CS(NHC 6 H 5) 2, which may be decomposed into phenyl mustard-oil, C 6 H 5 CNS, and triphenyl guanidine, C 6 H 5 N: C(NHC6H5)2.

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