urea alkylating agent N-ethyl-N-nitrosourea 1-ethyl-1-nitrosourea N-Ethylnitrosourea 1-Ethyl-1-nitrosourea N-Ethyl-N-nitroso carbamide 1-(Aminocarbonyl)-1-ethyl-2-oxohydrazine NEU A member of the class of <em>N</em>-nitrosoureas that is urea in which one of the nitrogens is substituted by ethyl and nitroso groups. Aethylnitroso-harnstoff 1-ethyl-1-nitrosourea Ethyl nitrosourea ENU N-Ethyl-N-nitroso-urea mutagen genotoxin carcinogenic agent N-nitrosoureas