抄録
Kinetic study was made on the metabolic fate of the benzoyl group of BTDS in man. First order rate constants for absorption, metabolism and excretion were calculated from data of urinary hippuric acid elimination after an oral administration of BTDS or benzoic acid. There could be found no appreciable difference on the rate constant in each process between the benzoyl group and benzoic acid. It was concluded that excretion of the benzoyl group as hippuric acid was rapid and complete as that of benzoic acid.