英文别名
2,5-Diethoxycarbonyl-3,4-diaza-cyclopentadienon-3,4-dioxid, 2,5-Dicarbethoxy-3,4-diaza-cyclopentadienon-3,5-dioxid;4-oxo-1,2-dioxy-4H-pyrazole-3,5-dicarboxylic acid diethyl ester;4-Oxo-1,2-dioxy-4H-pyrazol-3,5-dicarbonsaeure-diaethylester;Diethyl 1,2-dioxido-4-oxopyrazole-1,2-diium-3,5-dicarboxylate