When helping to enhance screening collections I'm sometimes asked to exclude "prohibited precursor chemicals", these are chemicals that might be used in the manufacture of illegal drugs.

The effective control of chemicals used in the illicit manufacture of narcotic drugs and psychotropic substances is an important tool in combating drug trafficking. These chemicals, known as ‘precursors’, also have legitimate commercial uses as they are legally used in a wide variety of industrial processes and consumer products, such as medicines, flavourings and fragrances.

I'm aware of this list on the UK Government website https://assets.publishing.service.gov.uk/...PRECURSORCHARTDomesticJan2014.pdf, and the listing from INCB http://www.incb.org/documents/PRECURSORS/REDLIST/2020/RedList2020E.pdf, however I'm sure it far from complete.

Does anyone know of a more complete listing? Preferably in a chemically intelligent form