Administrative Controlled Substances Code Number (ACSCN) is a number assigned to drugs listed on the schedules created by the US Controlled Substances Act (CSA). The ACSCN is defined in

21 CFR Title 21 is the portion of the Code of Federal Regulations that governs food and drugs within the United States for the Food and Drug Administration (FDA), the Drug Enforcement Administration (DEA), and the Office of National Drug Control Policy (O ...

§ 1308.03(a). Each chemical/drug on one of the schedules is assigned an ACSCN (for example, heroin is assigned 9200). The code number is used on various documents used in administration of the system mandated by the CSA. ACSCN tables include the CSA schedule, common alternative chemical and trade names, and the free base conversion ratio (the

molecular mass The molecular mass (''m'') is the mass of a given molecule: it is measured in daltons (Da or u). Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element. The related quanti ...

of the substance in question divided by the molecular mass of the

free base Free base (freebase, free-base) is the conjugate base ( deprotonated) form of an amine, as opposed to its conjugate acid ( protonated) form. The amine is often an alkaloid, such as nicotine, cocaine, morphine, and ephedrine, or derivatives ther ...

). This is used to make meaningful qualitative comparisons between substances, and labeling of the end product may, as is required in many European countries, list the active substance using both (e.g. "each tablet contains 120 mg dihydrocodeine bitartrate, representing 80 mg dihydrocodeine base"). This method of citation is in theory compulsory worldwide for substances in Schedule I of the

Single Convention on Narcotic Drugs The Single Convention on Narcotic Drugs, 1961 (Single Convention, 1961 Convention, or C61) is an international treaty that controls activities (cultivation, production, supply, trade, transport) of specific narcotic drugs and lays down a syste ...

1961, a classification corresponding to opioids in US Schedule II with Narcotic classification plus

cocaine Cocaine (from , from , ultimately from Quechua: ''kúka'') is a central nervous system (CNS) stimulant mainly used recreationally for its euphoric effects. It is primarily obtained from the leaves of two Coca species native to South Ameri ...

(which inherited a narcotic designation from the 1931

Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs The Convention for Limiting the Manufacture and Regulating the Distribution of Narcotic Drugs was a drug control treaty promulgated in Geneva on 13 July 1931 that entered into force on 9 July 1933. History The conference was held in Geneva on ...

and preceding treaties and national laws including the 1914

Harrison Narcotics Tax Act The Harrison Narcotics Tax Act (Ch. 1, ) was a United States federal law that regulated and taxed the production, importation, and distribution of opiates and coca products. The act was proposed by Representative Francis Burton Harrison of New Y ...

) and German Betäubungsmittelgesetz (BtMG) Schedule I and so on. This is also the case for Single Convention Schedule IV, which roughly corresponds to the United States' CSA Schedule I. and CSU Schedule

List of schedules

For a complete list, see the list of schedules:DEA Office for Diversion Control WWW page *

List of Schedule I drugs (US) This is the list of Schedule I drugs as defined by the United States Controlled Substances Act. 21 CFRbr>1308.11(CSA Sched I) with changes through (Oct 18, 2012). Retrieved September 6, 2013. The following findings are required for drugs to be pla ...

List of Schedule II drugs (US) This is the list of Schedule II drugs as defined by the United States Controlled Substances Act.21 CFR1308.12(CSA Sched II) with changes through (Oct 18, 2012). Retrieved September 6, 2013. The following findings are required for drugs to be place ...

List of Schedule III drugs (US) This is the list of Schedule III drugs as defined by the United States Controlled Substances Act at and , with modifications through August 22, 2014 (). The following findings are required for drugs to be placed in this schedule: retrieved Septemb ...

* List of Schedule IV drugs (US) * List of Schedule V drugs (US) * List of List 1 reagents and raw materials * List of List 2 reagents and raw materials

References

*Text of Single Convention On Narcotic Drugs 1931 (English). also cited in Wikipedia article on Single Convention, courtesy UNODC web site, retrieved 30. April 2014 *21 CFR § 1308.03(a) *DEA Office of Diversion Control WWW site, retrieved 26. April 2014 *German-language text of Österreichische Suchtmittelgesetz, retrieved 3. May 2014 § 27 *German-language text of Deutsche Betäungsmittelgesetz, retrieved 2. May 2014 *Innerhalb Betäubungsmittel, IV. Auflage (Wien, 8. February 2002), Tabelle 2C, Seite 116 (Deutsch) / Line 3819 in HTML-Version Copyright © Medical 4. January 1999 *2014, CCRPP Press Office Zagreb, Croatia—retrieved 4. January 2014 *Office of Narcotics Control & You: The Inside Dope (General Membership Manual of the NCOTCL, First Edition, 21. May 1990 *Proceedings for the 8. March 2002 meeting of NCOTCL North American Section *2014 CCRPP Press Office Zagreb, Croatia—retrieved 4. January 2014 Controlled Substances Act {{drug-stub