英文别名2-Methyl-1,2-dihydro-pyrazol-3-one; 1,2-Dihydro-2-methyl-3H-pyrazol-3-one; 1-Methyl-3-pyrazolin-5-one; 2-Methyl-1H-pyrazol-3(2H); 3H-Pyrazol-3-one, 1,2-dihydro-2-methyl-; 2-methyl-3(2H)-pyrazolone; 2-methyl-1H-pyrazol-3-one; 1-Methyl-pyrazol-5-on; 1-Methyl-pyrazolon; 2-methyl-1,2-dihydropyrazol-3-one 
