Reports

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

Abstract

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.