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Science 2 February 1968:
Vol. 159. no. 3814, p. 544
DOI: 10.1126/science.159.3814.544
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Articles

Anhydrous Uric Acid: Nature and Occurrence of a New Form in Urinary Calculi

Robin Shirley 1 and D. June Sutor 1

1 Department of Chemical Crystallography, University College, Gower Street, London, W.C.1, England

A second form of anhydrous uric acid has been found in urinary calculi; it is probably derived as an artifact from uric acid dihydrate during storage. It has been prepared in the laboratory by desiccation of uric acid dihydrate. Mixtures of these two substances sometimes give x-ray powder patterns that resemble that of xanthine on weak photographs, but are distinguishable by their infrared spectra.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Human Stones: Limited studies give some details of composition, rates of growth, distribution, and possible causes.
K. Lonsdale (1968)
Science 159, 1199-1207
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