Announcement on Adding 4-Piperidone and 1-Boc-4-Piperidone to the List of Controlled Precursor Chemicals

This joint announcement by multiple ministries adds two specific chemicals (4-piperidone and 1-Boc-4-piperidone) to the controlled list under the Regulations on the Administration of Precursor Chemicals, subjecting them to strict management to prevent their diversion for drug manufacturing. The controls take effect on July 20, 2025.