1,4-二甲氧基-9(10H)-吖啶硫酮

ethyl 5-(9-oxoxanthen-2-yl)oxypentanoate

2,5-二氯苯甲酸

2-乙基-1H-异吲哚-1,3(2H)-二酮

2-氯苯基乙酰氯