二乙基丙二酸二乙酯

N-甲基脲

5,5-Diethyl-1-methyl-3-propylbarbituric acid

5,5-diethyl-6-imino-1-methyl-1,3-diazinane-2,4-dione

acide diethyl-5,5 methyl-1 imino-4 barbiturique