5,5-Dihydroxybarbituric acid

5,5-dihydroxyperhydropyrimidinetrione

5,5-dihydroxy-1,3-diazinane-2,4,6-trione

5,5-Dihydroxyhexahydropyrimidine-2,4,6-trione

5,5-Dihydroxypyrimidine-2,4,6(1H,3H,5H)-trione

5,5-Dihydroxy-2,4,6(1H,3H,5H)-pyrimidinetrione