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- W2018673722 abstract "Dilute (0.1 M) solutions of HCN condense to oligomers at pH 8-9. Hydrolysis of these oligomers at pH 8.5 or with 6 N HCl yields 4,5-dihydroxypyrimidine, as the most abundant pyrimidine product along with orotic acid and 5-hydroxyuracil. These results, together with the earlier data, demonstrate that the three major nitrogen-containing classes of biomolecules could have originated from HCN on the primitive earth. The observation of the formation of orotic acid and 4-aminoimidazole-5-carboxamide by the hydrolysis of the HCN oligomers suggests that once the initially formed pyrimidines and purines were consumed, those life forms persisted which evolved enzymes for conversion of these intermediates to the pyrimidines and purines present in contemporary RNA." @default.
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- W2018673722 date "1977-09-01" @default.
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- W2018673722 title "Chemical evolution XXIX. Pyrimidines from hydrogen cyanide" @default.
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- W2018673722 doi "https://doi.org/10.1016/0303-2647(77)90015-6" @default.
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