Synthetic cannabinoid (SCRA)
UnscheduledADB-FUBHQUCA
N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-[(4-fluorophenyl)methyl]-4H-quinoline-3-carboxamide
Aliases.N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1,4-dihydroquinoline-3-carboxamide
A synthetic cannabinoid with a dihydroquinoline ring, seized as a powder, with no pharmacological data whatsoever.
Updated on
Level of detail
Harm-reduction warning
No characterised human dose: animal / in vitro data only. Effect profile, safety margin and acute toxicity are not documented in human clinical practice. Extremely potent compound: severe effects, seizures and deaths reported in the literature.
Identifiers
- Formula
- C₂₃H₂₆FN₃O₂
- Molar mass
- 395.20 g·mol⁻¹
- CAS
- -
- PubChem CID
- 165361603
- First described
- Signalée pour la première fois en 2022. La molécule a été identifiée dans une poudre jaune d'environ deux kilogrammes saisie par les douanes turques en septembre 2021, sa structure étant confirmée par chromatographie gazeuse et liquide couplées à la spectrométrie de masse, spectroscopie infrarouge et RMN au laboratoire de la faculté de pharmacie de l'université d'Ankara. Aucune publication de chimie médicinale ne revendique sa conception : elle est apparue directement sur le marché des drogues de synthèse. En juillet 2023, le comité britannique ACMD l'a recensée dans sa revue des agonistes des récepteurs cannabinoïdes échappant aux contrôles, en notant qu'aucune information pharmacologique n'était disponible et qu'aucune détection n'avait été rapportée au Royaume-Uni.
- Origin
- No natural origin. It is not a constituent of hemp and the molecule exists in no plant: it comes entirely from chemical synthesis. The only documented report is a seizure of powder. In this class of substances, the powders are then sprayed onto inert plant material or impregnated onto paper, then resold under another name, sometimes wrongly presented as cannabis or CBD.
- InChIKey
- WEFDGWANUSMUJL-UHFFFAOYSA-N
In plain terms
ADB-FUBHQUCA is a synthetic drug made in a laboratory, with no connection whatsoever to hemp or to CBD. It was seized as a powder by Turkish customs and belongs to the family of products that are sprayed onto inert leaves before being resold under another name. Nobody knows what it does in the human body: no pharmacological study and no clinical data exist on it.
Receptors and activity
- CB1Agonist
- Agonist
- Partial agonist
- Antagonist
- Modulator
- Inverse agonist
Hover over a row for the precise value (Ki, EC50…)
Subjective signature
Hover over an axis to read its definition.
- Calm5
- Clarity3
- Sleep5
- Appetite5
- High5
Editorial estimate, not clinical.
Pharmacology
ADB-FUBHQUCA takes up the classic architecture of synthetic cannabinoids, a 4-fluorobenzyl chain, a carboxamide bridge and a tert-leucinamide group, but replaces the usual indole or indazole ring with a non-aromatic 1,4-dihydroquinoline. This modification of the core of the molecule probably explains its appearance: it takes the substance outside the scope of generic definitions drafted around indole and indazole. Pharmacologically, the file is empty. The British ACMD committee, which recorded it in July 2023, states that no information is available, and a literature search finds no study having measured its activity: no affinity or efficacy at CB1 and CB2, no pharmacokinetics, no metabolism, no toxicology specific to this molecule. Human data are entirely lacking, and its classification among cannabinoid receptor agonists remains a structural inference. This void is in itself the principal danger: in this class, full agonism at CB1, where THC is only a partial agonist, is accompanied by convulsions, delirious states, cardiac rhythm disturbances, intractable vomiting and renal or hepatic damage, sometimes fatal, and nothing makes it possible to place ADB-FUBHQUCA on that scale.
Key sources.
- ACMD, Cumyl-PeGaClone and other recently encountered synthetic cannabinoid receptor agonists, Home Office, juillet 2023, annexe A, entrée ADB-FUBHQUCA (noyau hydroquinoléine)
- AIPSIN, New Substance Report 118 : ADB-FUBHQUCA, 18 février 2022 (premier signalement et caractérisation analytique du produit saisi)
- ANSM, Liste consolidée des substances classées comme stupéfiants, mise à jour du 16 février 2026
- PubChem, CID 165361603, N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1,4-dihydroquinoline-3-carboxamide (identifiants et structure)
Origin (pharmaceutical research → illicit market)
No biosynthetic pathway. The molecule has no plant precursor and does not derive from the cannabigerol pathway that produces the cannabinoids of hemp. It belongs to the class of carboxamides obtained by coupling a heterocyclic acid with an amino acid amide, a purely synthetic assembly.
Legal framework
France
Not scheduled by name in France. The consolidated list of substances classified as narcotics published by ANSM, updated on 16 February 2026, does not mention ADB-FUBHQUCA, whereas it names its analogues ADB-FUBINACA, ADB-PINACA, ADB-CHMINACA and ADB-BUTINACA. The generic clause of annex IV of the decree of 22 February 1990, which covers tetrahydrocannabinols, their esters, ethers, salts as well as the salts of the aforementioned derivatives, does not apply here: this molecule is not a tetrahydrocannabinol. The definitions by family of synthetic cannabinoids set out in the same annex are built around exhaustively enumerated rings, indole, indazole, pyrrole, pyrrolo[3,2-c]pyridine and thiazolyl-indole, and the 1,4-dihydroquinoline ring of ADB-FUBHQUCA does not appear among them. As the text stands, the substance therefore escapes classification as a narcotic. That does not make it lawful to sell: no food, cosmetic or medicinal authorisation covers it, and scheduling may occur at any moment by ANSM decision.
European Union
No control measure at European Union level covers ADB-FUBHQUCA: the molecule has been the subject of no risk assessment report by the EUDA, formerly EMCDDA, and is not listed in the annex of Framework Decision 2004/757/JHA. Nor does it appear in the schedules of the 1971 United Nations Convention, hence no international control. In the United Kingdom, the ACMD committee recorded it in July 2023 among the cannabinoid receptor agonists falling outside the scope of the generic definition of the Misuse of Drugs Act, noting the absence of British detections and the uncommon nature of compounds with a hydroquinoline ring. Its status therefore varies between Member States, several of which apply national laws on new synthetic products.
Sources: EUR-Lex, UNODC, CND, ANSM, IUPHAR/BPS, ChEBI, EUDA. Our method.
Structural classification
- Class
- Synthetic cannabinoid (SCRA)
- Origin
- No natural origin. It is not a constituent of hemp and the molecule exists in no plant: it comes entirely from chemical synthesis. The only documented report is a seizure of powder. In this class of substances, the powders are then sprayed onto inert plant material or impregnated onto paper, then resold under another name, sometimes wrongly presented as cannabis or CBD.
- Status
- Unscheduled
Cannabinoïde de synthèse de type carboxamide. Le noyau est une 1,4-dihydroquinoléine portant le pont carboxamide en position 3, avec une chaîne 4-fluorobenzyle sur l'azote du noyau et un groupe lié tert-leucinamide, le motif dit ADB. Ce noyau n'est pas aromatique, ce qui distingue la molécule des noyaux indole et indazole utilisés par la quasi-totalité des autres cannabinoïdes de synthèse, et notamment de son analogue direct ADB-FUBICA.
Toxicology and risks
Aucune donnée toxicologique propre à ADB-FUBHQUCA : aucune étude animale, aucun cas clinique et aucun décès ne lui sont attribués, et le comité ACMD constate l'absence totale d'information. Ce qui suit concerne la classe entière des agonistes de synthèse des récepteurs cannabinoïdes, telle que documentée par ce même comité, et non des mesures faites sur cette molécule : confusion, anxiété, agitation, psychose, vomissements, baisse de la vigilance avec dépression de la ventilation et perte des réflexes de protection des voies aériennes, troubles du rythme cardiaque, convulsions, défaillance hépatique ou rénale, hospitalisations et, dans les formes sévères, décès. Un syndrome de sevrage est également décrit à l'arrêt de la consommation. L'absence de donnée sur la puissance de cette molécule interdit d'en tirer une quelconque conclusion rassurante.
Detection and analysis
La substance a été caractérisée sur le produit saisi par chromatographie en phase gazeuse et en phase liquide couplées à la spectrométrie de masse, par spectroscopie infrarouge à transformée de Fourier et par RMN, au laboratoire de la faculté de pharmacie de l'université d'Ankara. Aucune méthode validée de dosage en matrice biologique, aucun marqueur urinaire et aucun métabolite de référence ne sont publiés. Les tests immunologiques usuels ne reconnaissent pas les cannabinoïdes de synthèse : un dépistage cannabis négatif ne dit rien de la présence de cette molécule.
References
- 1.ACMD, Cumyl-PeGaClone and other recently encountered synthetic cannabinoid receptor agonists, Home Office, juillet 2023, annexe A, entrée ADB-FUBHQUCA (noyau hydroquinoléine)
- 2.AIPSIN, New Substance Report 118 : ADB-FUBHQUCA, 18 février 2022 (premier signalement et caractérisation analytique du produit saisi)
- 3.ANSM, Liste consolidée des substances classées comme stupéfiants, mise à jour du 16 février 2026
- 4.PubChem, CID 165361603, N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1,4-dihydroquinoline-3-carboxamide (identifiants et structure)
Structured data
- InChIKey
- WEFDGWANUSMUJL-UHFFFAOYSA-N
- SMILES
- CC(C)(C)C(NC(=O)C1=CN(Cc2ccc(F)cc2)c2ccccc2C1)C(N)=O
- Formula
- C23H26FN3O2
- Molar mass
- 395.20 g·mol⁻¹
- PubChem CID
- 165361603
LLM ingestion format: a structured superset of the entry (identifiers, binding, versioned legal status). Full corpus.