 The records on the research work of the I.G.Farbenkonzern at the Farbwerke Hoechst were confiscated by the U.S. Department of Commerce Intelligence, investigated by a Technical Industrial Committee of the U.S. Department of State and then brought to the US.The report published by the committee noted that while methadone was potentially addictive, it produced less sedation and respiratory depression than morphine and was thus interesting as a commercial drug.