diethyl 2-(((5-amino-1-benzyl-1H-1,2,4-triazol-3-yl)amino)methylene)malonate

亚苄基丙二酸二甲酯

2-diazotetrahydro-1H-pyrazolo<1,2-a>pyridazine-1,3(2H)-dione

二烯丙基丙二酸二乙酯