英文别名:
2,5-DIHYDRO-2-METHYL-5-OXO-1H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER;1H-Pyrazole-3-carboxylic acid, 2,5-dihydro-2-Methyl-5-oxo-, ethyl ester;Ethyl 2-Methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate;ethyl 2,5-dihydro-2-methyl-5-oxo-1H-pyrazole-3-carboxylate;Ethyl 3-hydroxy-1-methyl-1H-pyrazole-5-carboxylate