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Clinical data
Other names(-)-Trans-Δ9-tetrahydrocannabiphorol
  • (6aR,10aR)-3-heptyl-6,6,9-trimethyl-6a,7,8,10a-tetrahydrobenzo[c]chromen-1-ol
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass342.523 g·mol−1
3D model (JSmol)
  • CCCCCCCc3cc2OC(C)(C)[C@@H]1CCC(C)=C[C@H]1c2c(O)c3
  • InChI=1S/C23H34O2/c1-5-6-7-8-9-10-17-14-20(24)22-18-13-16(2)11-12-19(18)23(3,4)25-21(22)15-17/h13-15,18-19,24H,5-12H2,1-4H3/t18-,19-/m1/s1

Tetrahydrocannabiphorol (THCP) is a potent phytocannabinoid, a CB1 and CB2 agonist which was known as a synthetic homologue of THC,[1] but for the first time in 2019 was isolated as a natural product in trace amounts from Cannabis sativa.[2][3] It is structurally similar to Δ9-THC, the main active component of cannabis, but with the pentyl side chain extended to heptyl. Since it has a longer side chain, its cannabinoid effects are "far higher than Δ9-THC itself." Tetrahydrocannabiphorol has a reported binding affinity approximately 33 times that of Delta-9-THC.[4]



Δ3-THCP [1]

The Δ36a(10a) isomer Δ3-THCP was synthesised in 1941, and was found to have around the same potency as Δ3-THC, unlike the hexyl homologue parahexyl which was significantly stronger.[5]


JWH-091 (Δ8-THCP) [2], CAS# 51768-60-6

The Δ8 isomer is also known as a synthetic cannabinoid under the code name JWH-091,[6][7] It's unconfirmed whether or not Delta-8-THCP is found naturally in cannabis plants, but likely is due to Delta-8-THC itself being a degraded form of Delta-9-THC. [8] JWH-091 has approximately double the binding affinity at the CB1 receptor (22nM ± 3.9nM) in comparison to Delta-9-THC (40.7nM ± 1.7nM) or Delta-8-THC (44nM ± 12nM).[7] but appears significantly lower in vitro than the binding activity of Delta-9-THCP (Ki = 1.2 nM CB1)[9]

See also


  1. ^ Harvey DJ (March 1985). "Identification of hepatic metabolites of n-heptyl-delta-1-tetrahydrocannabinol in the mouse". Xenobiotica; the Fate of Foreign Compounds in Biological Systems. 15 (3): 187–197. doi:10.3109/00498258509045349. PMID 2992174.
  2. ^ Bueno J, Greenbaum EA (February 2021). "(-)-trans9-Tetrahydrocannabiphorol Content of Cannabis sativa Inflorescence from Various Chemotypes". Journal of Natural Products. 84 (2): 531–536. doi:10.1021/acs.jnatprod.0c01034. PMID 33565878. S2CID 231866062.
  3. ^ Linciano P, Russo F, Citti C, Tolomeo F, Paris R, Fulvio F, et al. (December 2021). "The novel heptyl phorolic acid cannabinoids content in different Cannabis sativa L. accessions". Talanta. 235: 122704. doi:10.1016/j.talanta.2021.122704. hdl:11380/1250339. PMID 34517579.
  4. ^ "THCp and CBDp, Newly Discovered, Extremely Potent Cannabinoids". 29 June 2020.
  5. ^ Adams R, Loewe S, Jelinek C, Wolff H (July 1941). "Tetrahydrocannabinol Homologs with Marihuana Activity. IX". Journal of the American Chemical Society. 63 (7): 1971–1973. doi:10.1021/ja01852a052.
  6. ^ Martin BR, Jefferson R, Winckler R, Wiley JL, Huffman JW, Crocker PJ, et al. (September 1999). "Manipulation of the tetrahydrocannabinol side chain delineates agonists, partial agonists, and antagonists". The Journal of Pharmacology and Experimental Therapeutics. 290 (3): 1065–1079. PMID 10454479.
  7. ^ a b Bow EW, Rimoldi JM (2016). "The Structure-Function Relationships of Classical Cannabinoids: CB1/CB2 Modulation". Perspectives in Medicinal Chemistry. 8: 17–39. doi:10.4137/PMC.S32171. PMC 4927043. PMID 27398024.
  8. ^ Hazekamp A, Fischedick JT, Díez ML, Lubbe A, Ruhaak RL (2010). "Chemistry of Cannabis". Comprehensive Natural Products II. pp. 1033–1084. doi:10.1016/B978-008045382-8.00091-5. ISBN 978-0-08-045382-8.
  9. ^ Citti C, Linciano P, Russo F, Luongo L, Iannotta M, Maione S, et al. (December 2019). "A novel phytocannabinoid isolated from Cannabis sativa L. with an in vivo cannabimimetic activity higher than Δ9-tetrahydrocannabinol: Δ9-Tetrahydrocannabiphorol". Scientific Reports. 9 (1): 20335. Bibcode:2019NatSR...920335C. doi:10.1038/s41598-019-56785-1. PMC 6937300. PMID 31889124.