1-methyl-2-sulfanylidenepyrimidin-4-one

1,3-dimethyl-6-sulfanylidene-1,3,5-triazinane-2,4-dione

2-methylamino-4,6,6-trimethyl-6H-1,3-thiazine

1,4,4,6-四甲基-3H-嘧啶-2-硫酮

2,3-二氢-3-甲基-6-(4-吡啶)-2-硫氧代-4(1H)-嘧啶酮