5-24-05-00289 (Beilstein Handbook Reference) 71999-51-4 BRN 0898198 N-(2-Chloroethyl)-N'-(2-(2,3-dioxo-1-piperazinyl)ethyl)-N-nitrosourea Urea, N-(2-chloroethyl)-N'-(2-(2,3-dioxo-1-piperazinyl)ethyl)-N-nitroso-