N-(1-Benzo[b]thien-2-yl-ethyl)-N-hydroxy O-phenyl Carbamate

N-(1-Benzo[b]thien-2-yl-ethyl)-N-hydroxy O-phenyl carbamate is an impurity found in Zileuton, a drug used to treat asthma. It can be utilized in analytical methods and as a reference standard.