title: Decomposition N-nitrosohydroxyalkylureas and N-nitrosooxazolidones in aqueous buffer.
abstract: The decomposition of N-nitroso-2-hydroxyethylurea, N-nitrosooxazolidone, N-nitroso-2-hydroxypropylurea and N-nitroso-5-methyloxazolidone in pH 7.4 phosphate buffer was studied. The aldehydes and ketones formed in the decompositions were monitored through the formation of dinitrophenylhydrazine derivatives, which were then analysed by high-performance liquid chromatography. N-Nitroso-2-hydroxyethylurea gave a 25% yield of acetaldehyde dinitrophenylhydrazone, while N-nitrosooxazolidone gave only 2%. The major product from the latter is 1,3-dioxolane-2-one (ethylene carbonate); ethylene glycol is a major product from both. The other two compounds studied gave similar products, but in much lower yields.
mesh_terms: D002021:Buffers; D002273:Carcinogens; D055598:Chemical Phenomena; D002621:Chemistry; D005038:Ethylnitrosourea / Q000031:analogs & derivatives; D009602:Nitrosamines; D009603:Nitroso Compounds; D009607:Nitrosourea Compounds; D023303:Oxazolidinones
chemical_list: D002021:Buffers; D002273:Carcinogens; D009602:Nitrosamines; D009603:Nitroso Compounds; D009607:Nitrosourea Compounds; D023303:Oxazolidinones; C022146:1-(2-hydroxyethyl)-1-nitrosourea; C036494:3-nitroso-2-oxazolidone; C036496:N-(2-hydroxypropyl)-N-nitrosourea; C036493:3-nitroso-5-methyl-2-oxazolidone; D005038:Ethylnitrosourea