61137-47-1 Cyclohexanecarboxylic acid, 4-((((2-chloroethyl)nitrosoamino)carbonyl)amino)-, methyl ester, t Cyclohexanecarboxylic acid, 4-(3-(2-chloroethyl)-3-nitrosoureido)-, methyl ester, (E)- NSC 155948 trans-4-(3-(2-Chloroethyl)-3-nitrosoureido)cyclohexanecarboxylic acid methyl ester