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Chemical and physical data | |
Formula | C23H36O2 |
Molar mass | 344.539 g·mol−1 |
3D model (JSmol) | |
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Hexahydrocannabiphorol (HHCP, sometimes mistakenly referred to as hexahydroxycannabiphorol) is a semi-synthetic cannabinoid derivative which has been marketed since around 2021. [1] [2] It is believed to be made from the hydrogenation of tetrahydrocannabiphorol (THCP). THCP is only reported as a trace component of cannabis in 2019. [3] HHCP was studied by Roger Adams as early as 1942. [4]
HHC-P is a partial agonist of the CB1 receptors with an EC50 of 44.4nM for 9R-HHCP and 134nM for 9S-HHCP. Compared to Hexahydrocannabinol (HHC) with an EC50 of 101nM for 9R-HHC and 1,190nM for 9S-HHC [5] In 2021, HHC-P was positively identified in multiple retail electronic vaping products in the United States. [1]
The legal status of hexahydrocannabinol and derivatives varies between countries, leading to widespread sale in some jurisdictions in Europe and the US.
In France, HHCP was banned in 2023. [6]
In Japan, Japanese Health Ministry announced that six synthetic cannabinoids with structures similar to HHCH, including HHCP, were to be banned from 6 January 2024 [7]
HHCP was banned in Slovakia as of 13 January 2024.[ citation needed ]
THC-O-acetate is the acetate ester of THC. The term THC-O-acetate and its variations are commonly used for two types of the substance, dependent on which cannabinoid it is synthesized from. The difference between Δ8-THC and Δ9-THC is bond placement on the cyclohexene ring.
Dimethylheptylpyran (DMHP) is a synthetic cannabinoid and analogue of tetrahydrocannabinol (THC). It was invented in 1949 during attempts to elucidate the structure of Δ9-THC, one of the active components of cannabis. DMHP is a pale yellow, viscous oil which is insoluble in water but dissolves in alcohol or non-polar solvents.
Δ9-Tetrahydrocannabutol is a phytocannabinoid found in cannabis that is a homologue of tetrahydrocannabinol (THC), the main active component of Cannabis. Structurally, they are only different by the pentyl side chain being replaced by a butyl side chain. THCB was studied by Roger Adams as early as 1942
JWH-018 (1-pentyl-3-(1-naphthoyl)indole, NA-PIMO or AM-678) is an analgesic chemical from the naphthoylindole family that acts as a full agonist at both the CB1 and CB2 cannabinoid receptors, with some selectivity for CB2. It produces effects in animals similar to those of tetrahydrocannabinol (THC), a cannabinoid naturally present in cannabis, leading to its use as synthetic cannabinoid products that, in some countries, are sold legally as "incense blends".
UR-144 (TMCP-018, KM-X1, MN-001, YX-17) is a drug invented by Abbott Laboratories, that acts as a selective full agonist of the peripheral cannabinoid receptor CB2, but with much lower affinity for the psychoactive CB1 receptor.
AM-2389 is a classical cannabinoid derivative which acts as a potent and reasonably selective agonist for the CB1 receptor, with a Ki of 0.16 nM, and 26× selectivity over the related CB2 receptor. It has high potency in animal tests of cannabinoid activity, and a medium duration of action. Replacing the 1',1'-dimethyl substitution of the dimethylheptyl side chain of classical cannabinoids with cyclopropyl or cyclopentyl results in higher potency than cyclobutyl, but only the cyclobutyl derivatives show selectivity for CB1 over CB2. High selectivity for CB1 over CB2 is difficult to achieve (cf. AM-906, AM-1235), as almost all commonly used CB1 agonists have similar or greater affinity for CB2 than CB1, and the only truly highly selective CB1 agonists known as of 2012 are eicosanoid derivatives such as O-1812.
APP-FUBINACA is an indazole-based synthetic cannabinoid that has been sold online as a designer drug. Pharmacological testing showed APP-FUBINACA to have only moderate affinity for the CB1 receptor, with a Ki of 708 nM, while its EC50 was not tested. It contains a phenylalanine amino acid residue in its structure.
MDMB-4en-PINACA is an indazole-based synthetic cannabinoid that has been sold online as a designer drug. MDMB-4en-PINACA was first identified in Europe in 2017. In 2021, MDMB-4en-PINACA was the most common synthetic cannabinoid identified by the Drug Enforcement Administration in the United States. MDMB-4en-PINACA differs from 5F-MDMB-PINACA due to replacement of 5-fluoropentyl with a pent-4-ene moiety (4-en).
Tetrahydrocannabiphorol (THCP) is a potent phytocannabinoid, a CB1 and CB2 receptor agonist which was known as a synthetic homologue of tetrahydrocannabinol (THC), but for the first time in 2019 was isolated as a natural product in trace amounts from Cannabis sativa.
Cannabidiphorol, the heptyl-homologue of cannabidiol was identified as a natural phytocannabinoid and named cannabidiphorol (CBDP) in 2019. It had previously been reported as a synthetic compound, but was not identified as a natural product prior to 2019. Recently, CBDP has been gained popularity due to it being synthesized and available on a commercial level.
Hexahydrocannabinol (HHC) is a hydrogenated derivative of tetrahydrocannabinol (THC). It is a naturally occurring phytocannabinoid that has rarely been identified as a trace component in Cannabis sativa, but can also be produced synthetically by firstly acid cyclization of cannabidiol and then hydrogenation of tetrahydrocannabinol. The synthesis and bioactivity of HHC was first reported in 1940 by Roger Adams.
11-Hydroxyhexahydrocannabinol is an active metabolite of tetrahydrocannabinol (THC) and a metabolite of the trace cannabinoid hexahydrocannabinol (HHC).
JWH-138 (THC-Octyl, Δ8-THC-C8) is a synthetic cannabinoid first synthesized by Roger Adams and studied heavily by John W. Huffman, with a Ki of 8.5nM at the CB1 cannabinoid receptor. THC-Octyl and its hydrogenated analog HHC-Octyl was synthesized and studied by Roger Adams as early as 1942.
ADB-FUBIATA (AD-18, FUB-ACADB, ADB-FUBIACA) is a synthetic cannabinoid compound first identified in 2021. It is closely related in structure to the older compound ADB-FUBICA but with the amide linker group extended by the addition of a methylene bridge. It started to be sold as an ingedient in grey-market synthetic cannabis blends following the introduction of legislation in China which for the first time introduced general controls on various classes of synthetic cannabinoids, but did not encompass compounds where the linker group had been extended in this fashion. ADB-FUBIATA has many times lower affinity for cannabinoid receptors than ADB-FUBICA with an EC50 of only 635 nM at CB1, but retains full agonist activity at this target, while being practically inactive at CB2.
HHC-acetate is a semi-synthetic cannabinoid derivative which has been marketed since around 2022. It is believed to be made in a three step process from cannabidiol extracted from hemp. The legal status of hexahydrocannabinol and derivatives such as HHC-O varies between countries leading to widespread sale in some jurisdictions in Europe and the US, but in France HHC and HHC-O were banned in 2023, and HHC is already banned in several other countries. On 1st of March 2024 HHC was banned on Czech Republic.
Hexahydrocannabihexol (HHCH) is a semi-synthetic cannabinoid derivative. It was first synthesised by Roger Adams in 1942 and found to be more potent than either the pentyl or heptyl homologues, or the unsaturated tetrahydrocannabinol analogue. HHCH was first identified as a designer drug in Sweden in September 2023.
THCP-O-acetate (THCP-O) is a semi-synthetic derivative of tetrahydrocannabiphorol (THCP) derived by acetylation of the OH group. It has been found as a component of grey-market cannabis products such as e-cigarette liquids and edible gummy lollies, and is allegedly a potent and long-lasting psychoactive cannabinoid.
HHCP-O-acetate is a semi-synthetic derivative of tetrahydrocannabiphorol (THCP) derived in several steps by hydrogenation to hexahydrocannabiphorol (HHCP) followed by acetylation of the OH group. It has been found as a component of grey-market cannabis products such as e-cigarette liquids and edible gumdrops, and is allegedly a potent and long-lasting psychoactive cannabinoid.
Isotetrahydrocannabinol (iso-THC) is a phytocannabinoid similar in structure to cannabicitran which has been identified as a trace component of Cannabis, but is more commonly found as an impurity in synthetic THC which has been made from cannabidiol. iso-THC is present with other isomers with the double bond in a different position and the saturated dihydro derivative. iso-THC can be described as the upper cyclization product of CBD, while THC is the lower cyclization product of CBD. Its pharmacology has not been studied, though it is commonly found as a trace impurity in commercially marketed Δ8-THC products.
Abeo-HHC acetate is a semi-synthetic derivative of tetrahydrocannabinol, first described in the 1980s. It is synthesised from delta-11-tetrahydrocannabinol, which can be made to undergo a ring expansion reaction via a hydrazone intermediate. It is structurally similar to HHC-acetate except that the methylated cyclohexyl ring has been replaced by a cycloheptane.