thiourea

3-chloro-6-(3,4-dichlorophenyl)pyridazine

3-(3,4-dichlorophenyl)-1H-pyridazin-6-one

(E)-4-(3,4-二氯苯基)-4-氧代-丁-2-烯酸

4-(3,4-dichlorophenyl)-4-oxo-2-(4-antipyrinyl)butanoic acid