Uracil Photoproducts from Uracil Irradiated in Ice

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Science  21 Mar 1969:
Vol. 163, Issue 3873, pp. 1341-1342
DOI: 10.1126/science.163.3873.1341


Two new products were isolated from uracil irradiated with ultraviolet light in frozen aqueous solution. As judged by mass, nuclear magnetic resonance, and ultraviolet and infrared spectra, one is a photopolymer, U3 and the structure of the other is probably 6-4'-[ pyrimidin-2'-one]-uracil. Formations of these products between pyrimidine bases are apparently common photoreactions, and may be important to the study of the photochemistry and photobiology of nucleic acids.

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