Crystal and Molecular Structure of a Thymine Phototrimer

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Science  11 Sep 1970:
Vol. 169, Issue 3950, pp. 1084-1085
DOI: 10.1126/science.169.3950.1084


Thymine trimer was isolated from a frozen aqueous solution of thymine which was irradiated with ultraviolet light and was presumably formed through the rearrangement of an initial oxetane photoproduct. X-ray diffraction analysis of a single crystal has confirmed the trimeric diol structure and has established the stereoconfiguration of the molecule. The possible importance of the diol structure in photobiology is pointed out.