1-甲基-8-苯基-1H-嘌呤-2,6(3H,7H)-二酮

2-[(6-氯-3,4-二氢-3-甲基-2,4-二氧代-1（2H）-嘧啶）甲基]丁苯甲腈

6-氯-1,3-二甲基脲嘧啶

1,6-dimethyl-3-phenylpyrimido[5,4-e][1,2,4]triazine-5,7-dione

3-(4-chlorophenyl)-1,6-dimethylpyrimido[5,4-e][1,2,4]triazine-5,7(1H,6H)-dione