In mammals mixed function oxidases are chiefly responsible for metabolism; 3-hydroxycarbofuran and 3-ketocarbofuran are the most common carbamate metabolites. 3-Hydroxy-N-hydroxycarbofuran is also produced to some extent in all the test animals except the mouse. Hydrolysis of the carbamoyl ester bond also occurs, producing 3-ketocarbofuran phenol followed by carbofuran phenol and 3-hydroxyphenol. These degradation products are primarily excreted as conjugates of glucuronic acid and sulfate.