mutagen

N-Nitroso-N-methylurea (NMU MNU NMH) is a nitrosourea compound with alkylating, carcinogenic, and mutagenic properties; as a direct-acting alkylating agent, it interacts with DNA and targets multiple animal organs to induce various cancers and degenerative diseases, and is commonly used to induce disease models such as gastric cancer and breast cancer in mice.

Urethane (Ethyl carbamate; Ethylurethane) is a byproduct formed during the fermentation process of various foods. As an ethyl ester of carbamic acid, it has the ability to inhibit the growth of bacteria, sea urchin eggs, protozoa, and plant tissues, and is commonly used for establishing lung cancer models.

Dimethylnitrosamine (NDMA) is a potent hepatotoxin, carcinogen, and mutagen, and is commonly used to establish liver tumor models.