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Synthetic cannabinoid (SCRA)

CUMYL-FUBINACA

A synthetic indazole-3-carboxamide with a cumyl head, a potent CB1 agonist in vitro, a narcotic in France through a generic clause.

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.

Receptors and activity

  1. CB1Agonist75 out of 100

    Aucune constante d'affinité retrouvée ; agoniste puissant et efficace en essai de potentiel de membrane sur cellules AtT-20, EC50 de la série cumyle comprises entre 0,43 et 12,3 nM (Longworth et coll., 2017)

  2. CB2Agonist55 out of 100

    Aucune constante d'affinité retrouvée ; EC50 de la série cumyle comprises entre 11,3 et 122 nM, sélectivité fonctionnelle de 3,1 à 53 fois pour CB1 (Longworth et coll., 2017)

Bar length shows the relative strength of the interaction, as an indication.

Subjective signature

Calm
8 out of 100
Relaxation of body and mind; reduced mental noise without marked drowsiness.
Clarity
3 out of 100
Sustained attention and clear thinking; functional lucidity, not euphoria.
High
10 out of 100
Euphoria and sensory intensity; altered perception of time and space.
Appetite
10 out of 100
Stimulation of hunger and of taste appreciation (the “munchies” effect).
Sleep
8 out of 100
Sedative effect: aids sleep onset and the continuity of deep sleep.
Editorial estimate, not clinical.

Pharmacology

CUMYL-FUBINACA (SGT-149) is a synthetic indazole-3-carboxamide that combines a 4-fluorobenzyl tail with a cumyl head. Its only experimental pharmacological characterisation found comes from Longworth and colleagues (ACS Chemical Neuroscience, 2017), who evaluated it alongside nine other carboxamides with a cumyl head: the whole series behaves there as potent and efficacious agonists at CB1 and CB2, with EC50 values of 0.43 to 12.3 nM at CB1 and a functional selectivity of 3.1 to 53 fold for CB1. No affinity constant has been found, nor any in vivo, metabolism or toxicology study concerning this molecule; no poisoning has been attributed to it in the indexed literature. It was spotted on user websites and forums during monitoring conducted from November 2017 to May 2019. Absent from the international schedules, it is nevertheless classified as a narcotic in France through the generic clause covering 3-carboxamide indazole derivatives. Human data are lacking, and no safe amount is defined.

History

Source
An entirely synthetic molecule, absent from cannabis as from any living organism. It was spotted on websites and forums of users of new synthetic products during web-crawler monitoring conducted from November 2017 to May 2019, published by Zangani and colleagues in 2020, without appearing, in spring 2019, in the databases of the European drugs observatory or of the United Nations Office on Drugs and Crime.

Origin (pharmaceutical research → illicit market)

No biosynthetic pathway: the molecule exists in no living organism and comes exclusively from organic synthesis of the indazole-3-carboxamide class, by forming an amide bond between an indazole-3-carboxylic acid derivative bearing the fluorobenzyl group and an amine with a cumyl head. Manufacture is described here by chemical class only.

References

Structured data

SMILES
CC(C)(C1=CC=CC=C1)NC(=O)C2=NN(C3=CC=CC=C32)CC4=CC=C(C=C4)F
InChIKey
ABBDMPBQHOHMJZ-UHFFFAOYSA-N

Machine-readable entry (JSON)

LLM ingestion format: a structured superset of the entry (identifiers, binding, versioned legal status). Full corpus.