63989-90-2 7,9-Diazaspiro(4.5)decane-6,8,10-trione, 1,4-dimethyl-, sodium salt Sodium 1,4-dimethyl-7,9-diazaspiro(4.5)decane-6,8,10-trione Sodium spiro(2',5'-dimethylcyclopentane)-5,5-pyrimidine-2,4,6-trione Sodium spiro(2,5-dimethylcyclopentane barbiturate)