Δ-7-Tetrahydrocannabinol
{{Short description|Chemical compound}}
{{Drugbox
| IUPAC_name = (6aR,9S,10aR)-6,6,9-trimethyl-3-pentyl-6a,9,10,10a-tetrahydrobenzo[c]chromen-1-ol
| image = Delta-7-THC Structure.svg
| image_class = skin-invert-image
| width = 220
| pregnancy_category =
| legal_status =
| routes_of_administration =
| bioavailability =
| metabolism =
| excretion =
| CAS_number_Ref = {{cascite|correct|CAS}}
| CAS_number = 162678-94-6
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = SSA668ROQJ
| PubChem = 10313569
| KEGG = C22742
| ChemSpiderID = 8489034
| ChEMBL =
| ChEBI =
| C=21 | H=30 | O=2
| smiles = CCCCCC1=CC(=C2[C@@H]3C[C@@H](C=C[C@H]3C(OC2=C1)(C)C)C)O
| StdInChI = 1S/C21H30O2/c1-5-6-7-8-15-12-18(22)20-16-11-14(2)9-10-17(16)21(3,4)23-19(20)13-15/h9-10,12-14,16-17,22H,5-8,11H2,1-4H3/t14-,16-,17-/m1/s1
| StdInChIKey = WWYMYGIVLCKTBL-DJIMGWMZSA-N
}}
Δ-7-Tetrahydrocannabinol (Delta-5-THC, Δ5-THC; alternatively numbered as Δ-5-Tetrahydrocannabinol, Δ7-THC) is a synthetic isomer of tetrahydrocannabinol. The (6aR,9S,10aR)-Δ7-THC epimer is only slightly less potent than Δ9-THC itself, while the (9R) epimer is much less potent.{{cite journal | vauthors = Mechoulam R, Ben-Zvi Z, Varconi H, Samuelov Y | title = Cannabinoid rearrangements: Synthesis of Δ5-tetrahydrocannabinol. | journal = Tetrahedron | date = 1973 | volume = 29 | issue = 11 | pages = 1615–1619 | doi = 10.1016/S0040-4020(01)83406-2 }}{{cite journal | vauthors = Huffman JW, Banner WK, Zoorob GK, Joyner HH, Reggio PH, Martin BR, Compton DR | title = Stereoselective synthesis of the epimeric Δ7-tetrahydrocannabinols. | journal = Tetrahedron | date = 1995 | volume = 51 | issue = 4 | pages = 1017–1032 | doi = 10.1016/0040-4020(94)00995-7 }}