5-24-05-00291 (Beilstein Handbook Reference) 69000-93-7 BRN 0857469 N-(2-Chloroethyl)-N'-(3-(4-hexyl-2,3-dioxo-1-piperazinyl)propyl)-N-nitrosourea Urea, N-(2-chloroethyl)-N'-(3-(2,3-dioxo-4-hexyl-1-piperazinyl)propyl)-N-nitroso-