11-Hydroxy-THC

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11-Hydroxy-THC
11-OH-THC.svg
11-Hydroxy-THC molecule
Identifiers
CAS Number 36557-05-8 N
PubChem (CID) 37482
ChemSpider 34385 YesY
ECHA InfoCard 100.164.583
Chemical and physical data
Formula C21H30O3
Molar mass 330.461 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

11-Hydroxy-Δ9-tetrahydrocannabinol (11-OH-THC) is the main active metabolite of Tetrahydrocannabinol (THC) which is formed in the body after cannabis is consumed.[1] The conversion from THC to 11-OH-THC is relatively high when cannabis is consumed in the form of cannabis edibles and, compared to oral consumption, lower when it is smoked or vaped.[2] 11-OH-THC is more potent than THC and crosses the blood–brain barrier more easily.[3][4] 11-Hydroxy-THC has been shown to be active in its own right.[5][6] This might partially explain the biphasic effects of cannabis, whereby some effects such as increased appetite tend to be delayed rather than occurring immediately when the drug is consumed.[7]

Preparing cannabis for consumption as bhang

Fresh cannabis contains Tetrahydrocannabinolic acid (THCA), which is converted into THC after heating and then metabolized by the body into 11-Hydroxy-THC.[8][9][10][11] Peak THC concentrations are lower after eating/drinking cannabis than after administration by smoking or vaping, but conversely, 11-OH-THC/THC ratios are higher after eating/drinking than after smoking cannabis.[12] After administration through eating or drinking, approximately equal quantities of THC and 11-OH-THC are formed, whereas 11-OH-THC is a minor constituent after administration by intravenous or smoking routes.[13] Because edible doses are processed by the liver before entering the bloodstream, THC consumed as edibles produces high levels of 11-OH-THC, while smoked cannabis, which goes directly from the lungs to the brain via the bloodstream and does not enter the liver,[14] produces lower levels.[15]

11-Hydroxy-THC is subsequently metabolised further to 11-nor-9-carboxy-THC, which is not psychoactive but might still play a role in the analgesic and anti-inflammatory effects of cannabis.

References[edit]

  1. ^ Johnson JR, Jennison TA, Peat MA, Foltz RL (1984). "Stability of delta 9-tetrahydrocannabinol (THC), 11-hydroxy-THC, and 11-nor-9-carboxy-THC in blood and plasma". Journal of analytical toxicology. 8 (5): 202–4. doi:10.1093/jat/8.5.202. PMID 6094914. 
  2. ^ Government Marijuana Researcher Speaks Favorably About Marijuana's Medical Utility NORML September 26, 1996.
  3. ^ Possible hepatotoxicity of chronic marijuana usage Sao Paulo Med. J. vol.122 no.3 São Paulo May 2004.
  4. ^ Possible hepatotoxicity of chronic marijuana usage Sao Paulo Med. J. vol.122 no.3 São Paulo May 2004.
  5. ^ Turkanis SA, Karler R (1988). "Changes in neurotransmitter release at a neuromuscular junction of the lobster caused by cannabinoids". Neuropharmacology. 27 (7): 737–42. doi:10.1016/0028-3908(88)90083-4. PMID 2901683. 
  6. ^ Hollister LE, Gillespie HK (1975). "Action of delta-9-tetrahydrocannabinol. An approach to the active metabolite hypothesis". Clin. Pharmacol. Ther. 18 (6): 714–9. PMID 1204277. 
  7. ^ Lemberger, L; Martz, R; Rodda, B; Forney, R; Rowe, H (1973). "Comparative Pharmacology of Δ9-Tetrahydrocannabinol and its Metabolite, 11-OH-Δ9-Tetrahydrocannabinol". The Journal of Clinical Investigation. 52 (10): 2411–7. doi:10.1172/JCI107431. PMC 302499Freely accessible. PMID 4729039. 
  8. ^ Baker PB, Taylor BJ, Gough TA (Jun 1981), "The tetrahydrocannabinol and tetrahydrocannabinolic acid content of cannabis products", Journal of Pharmacy and Pharmacology, 33 (6): 369–72, doi:10.1111/j.2042-7158.1981.tb13806.x, PMID 6115009 
  9. ^ Sirikantaramas S, Morimoto S, Shoyama Y, Ishikawa Y, Wada Y, Shoyama Y, Taura F (2004-09-17), "The gene controlling marijuana psychoactivity: molecular cloning and heterologous expression of Delta1-tetrahydrocannabinolic acid synthase from Cannabis sativa L.", Journal of Biological Chemistry, 279 (38): 39767–74, doi:10.1074/jbc.M403693200, PMID 15190053 
  10. ^ Moore C, Rana S, Coulter C (2007-06-01), "Simultaneous identification of 2-carboxy-tetrahydrocannabinol, tetrahydrocannabinol, cannabinol and cannabidiol in oral fluid", J Chromatogr B Analyt Technol Biomed Life Sci., 852 (1-2): 459–64, doi:10.1016/j.jchromb.2007.02.016, PMID 17321807 
  11. ^ Taura F. (Jun 2009), "Studies on tetrahydrocannabinolic acid synthase that produces the acidic precursor of tetrahydrocannabinol, the pharmacologically active cannabinoid in marijuana", Drug Discoveries and Therapeutics, 3 (3): 83–7, PMID 22495534 
  12. ^ "Δ9-Tetrahydrocannabinol (THC), 11-Hydroxy-THC, and 11-Nor-9-carboxy-THC Plasma Pharmacokinetics during and after Continuous High-Dose Oral THC". Clin. Chem. 55: 2180–9. December 2009. doi:10.1373/clinchem.2008.122119. PMC 3196989Freely accessible. PMID 19833841. 
  13. ^ The metabolism of delta 9-tetrahydrocannabinol and related cannabinoids in man J Clin Pharmacol. 1981 Aug-Sep;21(8-9 Suppl):178S-189S.
  14. ^ Dazed & Infused: Five legit reasons why an edible’s high is unpredictable
  15. ^ Government Marijuana Researcher Speaks Favorably About Marijuana's Medical Utility NORML September 26, 1996.
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