5-pentan-3-yl-1,3-diazinane-2,4,6-trione

5,7-diazaspiro[2.5]octane-4,6,8-trione

6,8-diamino-1H-pyrimido[5,4-g]pteridine-2,4-dione

5-[(3-氯苯基)亚甲基]-2,4,6(1H,3H,5H)-嘧啶三酮

5-[(4-氯苯基)亚肼基]-2,4,6(1H,3H,5H)-嘧啶三酮