1-Nitroso-2-imidazolidinone 1-Nitroso-2-imidazolidone 2-IMIDAZOLIDINONE, 1-NITROSO- 3844-63-1 5-24-01-00162 (Beilstein Handbook Reference) BRN 0123509 Ethylenenitrosourea Imidazolidinone, 1-nitroso- N-Nitroso-2-imidazolidone N-Nitroso-N,N'-ethyleneurea N-Nitroso-imidazolidon [German] N-Nitrosoimidazolidone NSC 73438 Nitrosoimidazolidone SRI 1869