乙基4-乙酰基-1H-吡咯-2-羧酸酯

ethyl 2-(propan-2-yloxycarbonylamino)acetate

1-(环己烯-2-磺酰基)-4-甲苯

4,5,6,7-四氢异吲哚-1-羧酸乙酯

diethyl [1,3]thiazolo[5,4-d][1,3]thiazole-2,5-dicarboxylate