Δ8-Tetrahydrocannabinol
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Δ8-Tetrahydrocannabinol is a psychoactive cannabinoid found in the Cannabis plant. It is an isomer of Δ9-tetrahydrocannabinol, with which it co-occurs in hemp; natural quantities of ∆8-THC found in he
∆8-THC has a double bond (a) between the carbon atoms labeled 8 and 9.
∆9-THC has a double bond (a) between the carbon atoms labeled 9 and 10.
In the United States, the use of cannabis for medical purposes is legal in 41 states, four out of five permanently inhabited U.S. territories, and the District of Columbia, as of July 2025. Ten other
Cannabis pills sold by Parke, Davis & Co.
"Cannabis is Medicine, Let States Regulate!" protest in San Francisco, April 4, 2012
West Virginia Governor Jim Justice signs a bill to legalize medical cannabis on April 19, 2017
Medical cannabis supporters demonstrate in Los Angeles (August 2007)