ChEBI: N-ethyl-N-nitrosourea is a member of the class of N-nitrosoureas that is urea in which one of the nitrogens is substituted by ethyl and nitroso groups. It has a role as an alkylating agent, a mutagen, a carcinogenic agent and a genotoxin. It derives from a urea.NCI Thesaurus (NCIt): Ethylnitrosourea is a nitrosourea with potential antineoplastic activity. Used experimentally as a mutagen and carcinogen, ethylnitrosourea alkylates DNA and proteins, thereby damaging DNA and inducing point mutations. (NCI04)