[Office of the National Narcotics Control Commission issued a warning notice to prevent the risk of medetomidine and tartaric acid being lost and used to make drugs] On September 22, in order to prevent the risk of medetomidine and tartaric acid being lost and used to make drugs, the Office of the National Narcotics Control Commission publicly issued a "Warning Notice from the Office of the National Narcotics Control Commission on preventing the flow of medetomidine and tartaric acid into illegal channels for use in drug making." The "Notice" clarifies the CAS numbers and customs commodity numbers of medetomidine and tartaric acid, and reminds relevant enterprises and individuals to strictly follow the warning notices issued by the National Narcotics Control Office in August 2019, November 2023, and November 2025 when engaging in the business activities of the above chemicals, enhance legal awareness, and abide by domestic and foreign laws and regulations when carrying out relevant operations and export trade activities.