5-24-05-00291 (Beilstein Handbook Reference) 69000-90-4 BRN 0847409 N-(2-Chloroethyl)-N'-(3-(4-methyl-2,3-dioxo-1-piperazinyl)propyl)-N-nitrosourea Urea, N-(2-chloroethyl)-N'-(3-(2,3-dioxo-4-methyl-1-piperazinyl)propyl)-N-nitroso-