2,5-二氧代-1,2,5,6,7,8-六氢喹啉-3-羧酸

2-amino-7,8-dihydro-6H-quinazolin-5-one

2-methylsulfanyl-7,8-dihydro-6H-quinazolin-5-one

4-(甲基硫代)-1,3,5-噻嗪-2-胺

1,5,6,7-四氢-1-甲基-4H-吲唑-4-酮