Acids, Acyclic [Chemical/Ingredient] Carbamates [Chemical/Ingredient] Carbamates C26612 Derivatives of carbamic acid, H2NC(=O)OH. Included under this heading are N-substituted and O-substituted carbamic acids. In general carbamate esters are referred to as urethanes, and polymers that include repeating units of carbamate are referred to as POLYURETHANES. Note however that polyurethanes are derived from the polymerization of ISOCYANATES and the singular term URETHANE refers to the ethyl ester of carbamic acid. N0000008124 Carbamates 2001 D002219 C0006948 M0003327