1-(2-Hydroxyethyl)-1-nitrosourea 1-Nitroso-1-(2-hydroxyethyl)urea 13743-07-2 2-Hydroxyethylnitrosourea BRN 2246260 CCRIS 1850 HENU HNU Hydroxyethylnitrosourea N-(2-Hydroxyethyl)-N-nitrosourea N-Hydroxyethyl-N-nitrosourea N-Nitrosohydroxyethylurea Nitroso-2-hydroxyethylurea Urea, 1-(2-hydroxyethyl)-1-nitroso-