3-ethyl-4,6,6-trimethyl-1H-pyrimidine-2-thione

1-ethyl-6-hydroxy-4,4,6-trimethyl-tetrahydro-pyrimidine-2-thione

4,6,6-trimethyl-3-(4-nitrophenyl)-1H-pyrimidine-2-thione

1-环己基-3,4-二氢-4,4,6-三甲基-2(1H)-嘧啶硫酮

1-环己基-2-硫脲