Uracil sentence example
- N:CH N N:C(CH3) N NH CO NH ' 'CH :CH CH NH2 C :CH C CH 3 CH :CH 0 Pyrimidine Cyanmethine Uracil
- uracil mustard between 1958 and 1970 were reviewed.
- 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 335Ã‚° C. Hydrouracil, C4H602N2, is obtained by the action of bromine and caustic alkalis on succinamide (H.
- Nucleic acid is at present of unknown constitution; decomposition products are: phosphoric acid, uracil or 2.6-dioxy-pyrimidin,1 cytosin or 2-oxy-6-amino-pyrimidin, thymin (nucleosin) or 2.6-dioxy-5-methyl pyrimidin hypoxanthin 1 or 6-oxypurin, xanthin or 2.6-dioxypurin, adenine or 6 amino-purin, guanine or 2amino-6-oxypurin, pentoses (l-xylose), laevulinic acid, ammonia, etc. The nucleic acids vary with the source of the proteids, there being considerable differences in chemical composition.
- Theoretical relative energies and free energies for isolated uracil and thymine tautomers support the existence of the canonical form only.Advertisement
- METHODS: Records of patients treated with uracil mustard between 1958 and 1970 were reviewed.