Tetrahydrocannabinolic acid - PsychonautWiki

Tetrahydrocannabinolic acid

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Summary sheet: Tetrahydrocannabinolic acid

Template:SubstanceBox/THCA Tetrahydrocannabinolic acid (THCA, 2-COOH-THC; conjugate base tetrahydrocannabinolate) is a precursor of tetrahydrocannabinol (THC), an active component of cannabis.

THCA is found in variable quantities in fresh, undried cannabis, but is progressively decarboxylated to THC with drying, and especially under intense heating such as when cannabis is smoked or cooked into cannabis edibles.

THCA is rarely directly used, but its presence is commonly analyzed when cannabis or hemp-based products are screened for THC; some countries require that it be measured in such screens.

THCA in its isolated form is available for purchase in select medical and recreational cannabis dispensaries in the form of a white crystalline powder. It can be smoked or vaporized in typical smoking devices, such as a bong or dab rig (device used for vaporizing hash oil). These methods convert the THCA to THC and so are used for their psychoactive effects. THCA is also sometimes encapsulated and taken as a supplement for a variety of illnesses, although there are currently no established medical applications.

History and culture

 

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Chemistry

 

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It has two isomers, THCA-A, in which the carboxylic acid group is in the 1 position, between the hydroxy group and the carbon chain, and THCA-B, in which the carboxylic acid group is in the 3 position, following the carbon chain.[11]: 20  The crystal structures of both THCA-A (colourless prisms, orthorhombic P212121) and THCA-B (also colourless prisms, orthorhombic P212121) have been reported.

In the past THCA was thought to be formed in plants by cyclization of cannabidiolic acid but due to studies in the late 1990s it became apparent that its precursor is cannabigerolic acid, which goes through oxidocyclization through the actions of the enzyme THCA-synthase.

It is unstable, and slowly decarboxylates into THC during storage, and the THC itself slowly degrades to CBN, which has potential immunosuppressive and anti-inflammatory activities.[1] When heated or burned, as when cannabis is smoked or included in baked goods, the decarboxylation is rapid but not complete; THCA is detectable in people who smoke or otherwise consume cannabis.

Pharmacology

 

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Subjective effects

 
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Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWiki contributors. As a result, they should be viewed with a healthy degree of skepticism.

It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.

Physical effects
 

Visual effects
 

Cognitive effects
 

Auditory effects
 

Multi-sensory effects
 

Transpersonal effects
 

Experience reports

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Toxicity and harm potential

 

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Note: Always conduct independent research and use harm reduction practices if using this substance.

It is strongly recommended that one use harm reduction practices when using this substance.

Lethal dosage

Tolerance and addiction potential

Dangerous interactions

 

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Warning: Many psychoactive substances that are reasonably safe to use on their own can suddenly become dangerous and even life-threatening when combined with certain other substances. The following list provides some known dangerous interactions (although it is not guaranteed to include all of them).

Always conduct independent research (e.g. Google, DuckDuckGo, PubMed) to ensure that a combination of two or more substances is safe to consume. Some of the listed interactions have been sourced from TripSit.

Legal status

 

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See also

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Literature

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References