The legal status of drugs and drug precursors varies substantially from country to country and is still changing in many of them. United Nations classify drugs internationally, it affects all its member states.
INCB "Red list" – List of Chemicals frequently used in the Illicit Manufacture of Narcotic Drugs and Psychotropic Substances under International Control[7]
^"Convention on Psychotropic Substances". www.unodc.org.
^"Convention against the Illicit Traffic in Narcotic Drugs and Psychotropic Substances". www.unodc.org.
^"green-lists". www.incb.org. Archived from the original on 2015-12-08. Retrieved 2017-10-21.
^"Yellow list". www.incb.org. Archived from the original on 2020-02-17. Retrieved 2017-10-21.
^"UN Convention on Drug Precursor Chemicals". www.chemsafetypro.com.
^"green-lists". www.incb.org. Archived from the original on 2015-12-08. Retrieved 2017-10-21.
^"(nicht verkehrsfähige Betäubungsmittel)".
^"(verkehrsfähige, aber nicht verschreibungsfähige Betäubungsmittel)".
^"(verkehrsfähige und verschreibungsfähige Betäubungsmittel)".
^"Läkemedelsverkets föreskrifter - LVFS/HSLF-FS - Läkemedelsverket / Medical Products Agency". lakemedelsverket.se (in Swedish). Archived from the original on 2017-10-22. Retrieved 2017-10-21.
^"Förordning (1999:58) om förbud mot vissa hälsofarliga varor". www.notisum.se. Archived from the original on 2013-10-04. Retrieved 2017-10-21.
^"The Misuse of Drugs Act 1971 (Ketamine etc.) (Amendment) Order 2014". www.legislation.gov.uk.