N-methyl-1,1-dioxo-4H-1λ⁶,2,4-benzothiadiazine-3-carboxamide

4-(3-氯苯基)-2,4-二氧代丁酸乙酯

ethyl 2-fluorobut-2-enoate

2,4-二氧代-4-(对甲苯)丁酸乙酯

1,4-二氢-1,4-二甲基-2,3-喹喔啉二酮