3-cyclohexyl-1-methyl-1-nitrosourea

quinolin-8-yl N-methylcarbamate

1-methyl-3-[4-(methylcarbamoylamino)cyclohexyl]urea

3-[3-[[(甲基氨基)羰基]氧基]丙基]-1-丙基-2(1H)-喹喔啉酮

1-methyl-3-[[6-[(methylcarbamoylamino)methyl]pyridin-2-yl]methyl]urea