methylurean.甲脲methyln.甲基；木精Methyl carbophenothion甲基三硫磷methyl-malonic ester甲基丙二酸二乙酯methylmethanesulfonate甲基甲磺酸methyloxaloacetic acid草酰乙酸甲酯methyl-N-histamine甲基-N-组胺Methyl D-galactoside甲基半乳糖苷methyl-sulfinic acid甲亚磺酸Methylglyoxal synthase甲基乙二醛合酶methyl biphenyl ketone甲基联苯基甲酮methylenediphosphonaten.亚甲基二膦酸