5-acetyl-3,4-diphenyl-1H-pyridazin-6-one

ethyl 3-oxo-5,6-diphenyl-2,3-dihydropyridazine-4-carboxylate

4-cyano-5,6-diphenyl-3-(2'-cyanoethyl-oxo)pyridazine

4-carbethoxy-5,6-diphenyl-3-(2'-cyanoethyl-oxo)pyridazine

2,3-二氢-3-氧代-5,6-二苯基-4-哒嗪甲腈