哒嗪-4-羧酸甲酯;
methylpyridazine-4-carboxylate;4-methoxycarbonyl-pyridazine;Methyl-(4-pyridazincarboxylat);PYRIDAZINE-4-CARBOXYLIC ACID METHYL ESTER;methyl 4-pyridazinecarboxylate;
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