alkylating agent mutagen N-methyl-N-nitrosourea N-Nitroso-N-methylharnstoff MNU N-Methyl-N-nitrosoharnstoff methylnitrosouree N-nitrosomethylurea N-methyl-N-nitrosouree 1-methyl-1-nitrosourea nitrosomethylurea N-nitroso-N-methylurea A member of the class of <em>N</em>-nitrosoureas that is urea in which one of the nitrogens is substituted by methyl and nitroso groups. N-methyl-N-nitrosocarbamide NMU N-nitroso-N-methyluree 1-(aminocarbonyl)-1-methyl-2-oxohydrazine 1-nitroso-1-methylurea N-nitroso-N-methylcarbamide N-Methyl-N-nitrosourea Methylnitrosourea Methylnitrosoharnstoff 1-methyl-1-nitrosourea NMH carcinogenic agent teratogenic agent N-nitrosoureas