Open Access Articles- Top Results for RCS-4


File:RCS-4 molecular structure.png
Systematic (IUPAC) name
Clinical data
  • Illegal in Sweden, I-N (Poland)[1]
1345966-78-0 7pxN
ChemSpider 24769418 7pxY
Chemical data
Formula C21H23NO2
321.413 g/mol
 14pxN (what is this?)  (verify)

RCS-4, or 1-pentyl-3-(4-methoxybenzoyl)indole, is a synthetic cannabinoid drug sold under the names SR-19, BTM-4, or Eric-4 (later shortened to E-4), but originally, OBT-199.


RCS-4 was banned in Sweden on 1 October 2010 as a hazardous good harmful to health, after being identified as an ingredient in "herbal" synthetic cannabis products.[2][3] It was outlawed in Denmark on 11 March 2011.[4] In August 2011, New Zealand added not only RCS-4 but also its 1-butyl homologue, and the 2-methoxybenzoyl isomers of both these compounds, to a temporary class drug schedule (i.e. equivalent to Class C but reviewed after 12 months, and with personal possession and use of small amounts decriminalised), which was newly created under the Misuse of Drugs Amendment Act 2011 passed a week earlier.[5][6][7]

RCS-4 and related analogues detected in synthetic cannabis blends

See also


  1. ^ = WDU20111050614 "Ustawa z dnia 15 kwietnia 2011 r. o zmianie ustawy o przeciwdziałaniu narkomanii ( Dz.U. 2011 nr 105 poz. 614 )". Internetowy System Aktów Prawnych. Retrieved 12 June 2011. 
  2. ^ Swedish Code of Statutes Regulation (2010:1086).
  3. ^ Swedish Code of Statutes Regulation (2010:1086). (pdf)
  4. ^
  5. ^ "Kronic ban passed by Parliament". The New Zealand Herald. NZPA. 4 August 2011. Retrieved 4 November 2011. 
  6. ^ "Synthetic cannabis off shelves by Wednesday". The New Zealand Herald. NZPA. 9 August 2011. Retrieved 4 November 2011. 
  7. ^ New Zealand Gazette. Tuesday 9 August 2011. Issue No 122, pp 3365-3366. Departmental Notices. Health. Misuse of Drugs Act 1975. Temporary Class Drug Notice.

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