英文别名1-ethyl-3-methyl-1H-pyrazol-5(4H)-one; 1-ethyl-3-methyl-4,5-dihydro-1H-pyrazol-5-one; 3H-Pyrazol-3-one, 2-ethyl-2,4-dihydro-5-methyl-; 1-ethyl-3-methyl-2-pyrazolin-5-one; 2,4-dihydro-2-ethyl-5-methyl-3H-pyrazol-3-one; 1-ethyl-3-methyl-5-pyrazolone 
