Isolation and characterization of uricine from uric acid stones
Abstract:
Uricine was found to be present in all uric acid stones tested, although another physiochemically related pigment was occasionally present. Uricine is of low molecular weight (28.2) and a preliminary analysis of its structure suggests that it is formed by two pyrrolic rings. It is a yellow pigment whose color is pH-dependent, shifting from reddish-yellow to green at pH 1.0. It is water soluble, but its solubility increases in alkaline solutions. Preliminary evidence suggests that uricine is related metabolically to bilirubin-like compounds.
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