Dimethylthiambutene in 1951. Dimethylthiambutene is now under international control under the UN Single Convention on Narcotic Drugs 1961, the laws governing habit-forming substances in virtually all countries and Schedule I of the US Controlled Substances Act of 1970 due to high abuse potential and never being introduced clinically in the United States; other countries regulate it much as morphine or diamorphine. Its DEA ACSCN is 9619 and it had a zero manufacturing quota in 2013. Dimethylthiambutene Dimethylthiambutene ("N","N"-Dimethyl-1-methyl-3,3-di-2-thienylallylamine, DMTB, trade names Ohton, Aminobutene, Dimethibutin, Kobaton, Takaton, Dimethibutin) is an opioid analgesic drug, most often used in veterinary medicine in Japan and
Bayer war potential". It was split into its six constituent companies in 1951, then split again into three: BASF, Bayer and Hoechst. Bayer was at that point known as Farbenfabriken Bayer AG; it changed its name to Bayer AG in 1972. Fritz ter Meer, an IG Farben director and Nazi Party member who directed operations at the IG Farben plant at Auschwitz, was sentenced in 1948 to seven years for war crimes during the IG Farben Trial at Nuremberg. Released in 1950, he was elected chair of Bayer's supervisory board in 1956 and remained in that position until 1964. In 1953