 2,8-Dihydroxyadenine

2,8-Dihydroxyadenine is a derivative of adenine which accumulates in 2,8 dihydroxy-adenine urolithiasis.The poorly soluble purine 2,8-dihydroxyadenine is excreted in the urine because of a deficiency in the adenine salvage enzyme adenine phosphoribosyltransferase.