4,6-二氯-4H-嘧啶-5-酮肟

1-(4-溴苯基)-4-氯-1H-吡唑并[3,4-d]嘧啶

4-氯-1-(2-氯苯基)-1H-吡唑并[3,4-d]嘧啶

4,6-dichloro-5-(2,2-dibromoethenyl)pyrimidine

5-(2,2-dibromoethenyl)-4,6-diiodopyrimidine