1H-吡唑-3,4-二羧酸二乙酯; 二乙基-1H-吡唑-4,5-二羧酸二;

diethyl 1H-pyrazole-4,5-dicarboxylate; 1H-Pyrazole-3,4-dicarboxylic acid diethyl ester; Diethyl 1H-pyrazole-3,4-dicarboxylate;