63990-12-5 8,10-Diazaspiro(5.5)undecane-7,9,11-trione, 1,5-dimethyl-9-thioxo-, sodium salt Sodium 1,5-dimethyl-9-thioxo-8,10-diazaspiro(5.5)undecane-7,9,11-trione Sodium spiro(2',6'-dimethylcyclohexane)-5,5-pyrimidine-2-thio-4,6-dione Sodium spiro(2,6-dimethylcyclohexane 2'-thiobarbituric acid)