Urethane

Urethane (also called Ethyl carbamate) is a chemical compound first prepared in the nineteenth century. Structurally, it is an ester of carbamic acid. Despite its common name, it is not a component of polyurethanes.

Ethyl carbamate is a white crystalline substance produced by the action of ammonia on ethyl chloroformate or by heating urea nitrate and ethyl alcohol.