3-氨基-1-苯基-4,5-二氢吡唑啉-5-酮

5-氨基-1H吡唑-3-酮

ethyl 2-(7-bromo-1,2,4-benzotriazin-3-yl)acetate

2-(1,2,4-苯并三嗪-3-基)乙酸乙酯

ethyl 3,3-diaminoprop-2-enoate