THCH
THCH at a glance
Naturally occurring
Psychoactive
Cannabinoid type
Discovery year
Also known as
Molecular formula
C22H32O2
CB1 receptor interaction
CB2 receptor interaction
What is THCH?
THCH is a rare intoxicating phytocannabinoid and the six-carbon homologue of Delta-9-THC. It occurs naturally in Cannabis sativa in trace amounts and belongs to the small group of naturally occurring THC homologues with a side chain longer than that of Delta-9-THC. THCH is generally considered around 3× as psychoactively potent as Delta-9-THC, although its actual human potency has not been established in controlled studies.
THCH has the same basic THC structure as Delta-9-THC but contains a six-carbon (hexyl) side chain instead of the five-carbon (pentyl) side chain of Delta-9-THC. This longer side chain alters its biological activity. The naturally occurring form is trans-(6aR,10aR)-Delta-9-THCH, while other stereoisomers can also be produced synthetically. Delta-8-THCH is a separate positional isomer.
Because natural concentrations are extremely low, commercial THCH is generally produced synthetically and supplied as a high-purity distillate. Purified synthetic THCH has been described as a light yellow to amber coloured oil. Its unsaturated THC-type structure is expected to make it more susceptible to oxidation than its fully hydrogenated counterpart HHCH.
THCH was first synthesised during early THC homologue research in the 1940s, but its natural occurrence in cannabis was identified much later, in 2020. Interest increased rapidly with the emergence of newer THC homologues and the commercial cannabinoid market in the early 2020s. Scientific research remains limited, particularly regarding human potency, safety and pharmacokinetics.
How THCH works in the human body
THCH activates CB1 and is theoretically estimated at around 2x the psychoactive potency of Delta-9-THC. Peer-reviewed functional testing found that THCH had approximately the same CB1 functional potency as Delta-9-THC but reached a substantially higher maximum receptor response. Animal research shows that THCH is broken down into several metabolites, including 11-OH-THCH, a likely potent metabolite.
CB1 receptor
The main cannabinoid receptor in the brain, responsible for THC’s intoxicating effects. Functional research directly comparing THCH with Delta-9-THC found approximately 1.02x the functional potency, meaning almost identical concentrations were required to activate CB1. However, Delta-9-THCH reached approximately 1.49x the maximum CB1 response of Delta-9-THC, indicating greater efficacy once sufficient receptor activation occurred.
Structural analyses of the broader THC homolog series show that extending the alkyl side chain from THC’s five-carbon (pentyl) chain to THCH’s six-carbon (hexyl) chain allows deeper penetration into the CB1 binding pocket, a structural explanation for its enhanced activity. No formal binding affinity (Ki) value specific to THCH has been published with the same conditions as for THC, so the precise affinity remains unconfirmed.
The combination of approximately 1.02x functional potency and 1.49x greater maximum CB1 response, together with evidence from the broader THC homologue series, suggests stronger overall CB1 activity than Delta-9-THC. Based on the available receptor and cannabinoid homologue evidence, THCH is theoretically estimated at around 2x the psychoactive potency of Delta-9-THC, although this remains a theoretical estimate rather than a measured human potency ratio.
CB2 receptor
The main cannabinoid receptor in the immune system, involved in regulating immune cell activity and inflammatory responses. No dedicated CB2 binding or functional studies have been published for THCH specifically. Because other elongated-chain THC homologs like THCP show enhanced CB2 affinity alongside their stronger CB1 activity, a similar pattern is plausible for THCH, but this has not been tested directly and remains an inference from structurally related cannabinoids rather than verified evidence.
Metabolism
Animal metabolism research shows that THCH undergoes hydroxylation and further oxidation, including formation of 11-OH-THCH. This is comparable to the conversion of Delta-9-THC into the psychoactive metabolite 11-OH-THC.
Because THCH has a longer six-carbon side chain and shows stronger CB1 activity than Delta-9-THC, 11-OH-THCH is considered likely to be more potent than 11-OH-THC. However, this remains a theoretical expectation based on cannabinoid structure and receptor activity. 11-OH-THCH itself has not yet been directly tested for CB1 activity, and this greater potency has not been confirmed in humans.
Human safety status
No controlled human clinical trials or systematic toxicology studies exist for THCH. The only direct evidence comes from a cell-based functional receptor assay confirming enhanced CB1 activation; all reported subjective effects and tolerability come from anecdotal user reports rather than clinical research. Its likely safety profile is inferred from Delta-9-THC and related homologs, not from direct human data, so a reliable safety profile cannot currently be established.
THCH interactions with other compounds
Important disclaimer
This information is provided for educational and technical reference only. Interaction data can change as new research becomes available and may be incomplete or outdated. The real relevance of any interaction depends strongly on dose, route of administration, timing, formulation and individual metabolism. Readers should do their own research and consult a qualified healthcare professional before making decisions involving medicines, alcohol, nicotine, cannabinoids or other compounds. Elementra's products and information are intended for research, production and technical use only and are not intended for human consumption.
No Known Interactions Identified
Current Evidence
Limited Data
No sufficiently supported specific interactions between THCH and other cannabinoids, common substances or medicines have currently been identified. THCH has been directly studied for cannabinoid receptor activity, but research has not yet shown that another compound meaningfully changes THCH exposure or effects, or that THCH meaningfully changes the exposure or effects of another compound. This should not be interpreted as THCH having no interactions. Interactions may exist, but they have not yet been identified or characterized by research.
This content does not constitute advice
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