1,1-Diethyl-3-methyl-3-nitrosourea 1-Nitroso-1-methyl-3,3-diethylurea 50285-72-8 BRN 2249848 CCRIS 5585 Diethylmethylnitrosourea Nitroso-1,1-diethyl-3-methylurea Nitrosomethyldiaethylharnstoff Nitrosomethyldiethylurea UREA, 1,1-DIETHYL-3-METHYL-3-NITROSO-