Sentence Examples


  • By using urea, guanidine, thiourea and related compounds instead of amidines, one obtains the uracils.
  • 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.
  • CH(NH 2) � Cooh, arginin or guanidine-a-amino-n-valerianic acid, (NH)(NH2)C�NH� (CH 2) 3 �CH(NH 2)�Cooh, ornithin or aa-diamino valerianic acid, � (CH 2) 3 � CH(NH 2) � Coon, -(3-imidazol propionic acid, [[Hooc� Ch(Nh 2) �Ch 2 � C: Ch�N:Ch�Nh]], proline or a-pyrrolidin carboxylic acid, [[Hooc� Ch.
  • When heated with ammonia it yields guanidine, and on boiling with alcoholic potash it yields potassium carbonate.
  • GUANIDINE, CN 3 H 5 or HN: C(NH 2) 2j the amidine of amidocarbonic acid.
 

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