ECS modulator (research)
UnscheduledOMDM-2
(Z)-N-[(2R)-1-hydroxy-3-(4-hydroxyphenyl)propan-2-yl]octadec-9-enamide
Aliases.OMDM2 · (+)-OMDM-2
A laboratory tool that slows anandamide reuptake, with no notable action at CB1 or CB2.
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
- C₂₇H₄₅NO₃
- Molar mass
- 431.70 g·mol⁻¹
- CAS
- -
- PubChem CID
- 6604915
- First described
- Décrite en 2003 par Giorgio Ortar, Alessia Ligresti, Luciano De Petrocellis, Enrico Morera et Vincenzo Di Marzo, dans une série d'analogues aromatiques de l'oléoyléthanolamide et de l'anandamide publiée par Biochemical Pharmacology. Les premières observations chez l'animal suivent en 2004, dans un travail conduit avec Eva de Lago et Javier Fernández-Ruiz.
- Origin
- An entirely synthetic molecule, absent from cannabis and from every living organism. It is obtained in the laboratory by coupling an amino alcohol derived from tyrosine to an oleic acid chain, and is distributed only as a reagent intended for research.
- InChIKey
- ICDMLAQPOAVWNH-HAAQQRBASA-N
In plain terms
OMDM-2 is a molecule made in the laboratory, one that is found neither in hemp nor in any living being. Researchers use it to slow down the uptake of anandamide, a messenger that the body produces naturally, and then to observe what changes afterwards in animals. It has never been administered to people and it goes into no consumer product.
Receptors and activity
- Recapture cellulaire de l'anandamideKi 3,0 µM (Ortar et coll., 2003)Modulator
- FAAHKi > 50 µM, aucune inhibition utileModulator
- CB1Ki ≥ 5 µM, affinité négligeableModulator
- CB2Ki > 10 µMModulator
- TRPV1EC50 ≥ 10 µMModulator
- 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.
- Calm8
- Clarity4
- Sleep10
- Appetite4
- High4
Editorial estimate, not clinical.
Pharmacology
Arising from the series of aromatic analogues of oleoylethanolamide described in 2003 by Ortar and Di Marzo, OMDM-2 targets the transport of anandamide rather than a receptor: it blocks cellular reuptake of the messenger with a Ki of 3.0 µM, without inhibiting its hydrolysis by FAAH (Ki greater than 50 µM) and without exploitable affinity for CB1 (Ki of at least 5 µM), CB2 (greater than 10 µM) or TRPV1 (EC50 of at least 10 µM). This selectivity makes it a tool for dissecting the endocannabinoid system, not a drug candidate. In rodents, the molecule enhances the effects of a low dose of anandamide, reduces spasticity in a model of experimental allergic encephalomyelitis and increases sleep when infused into the paraventricular thalamus. A 2018 study nevertheless showed that it decreases social interaction, which suggests that blocking transport may also prevent the release of endocannabinoids instead of favouring it. The exact nature of the transport target remains disputed, the fatty acid binding proteins being the most studied candidates, and human data are entirely lacking.
Key sources.
- Ortar G. et al., Novel selective and metabolically stable inhibitors of anandamide cellular uptake, Biochemical Pharmacology, 2003PMID 12732359
- de Lago E. et al., In vivo pharmacological actions of two novel inhibitors of anandamide cellular uptake, European Journal of Pharmacology, 2004PMID 14744610
- Murillo-Rodriguez E. et al., The administration of endocannabinoid uptake inhibitors OMDM-2 or VDM-11 promotes sleep and decreases extracellular levels of dopamine in rats, Physiology & Behavior, 2013PMID 23238438
- Seillier A. et Giuffrida A., The cannabinoid transporter inhibitor OMDM-2 reduces social interaction, Neuropharmacology, 2018PMID 29169961
- PubChem, composé CID 6604915 (OMDM-2)
Origin (research tool)
No known biosynthetic pathway: the molecule is produced by no organism and comes solely from chemical synthesis, by formation of an amide bond between an aromatic amino alcohol of the tyrosinol type and an oleic chain.
Legal framework
France
OMDM-2 is named in no annex to the decree of 22 February 1990. It is neither a tetrahydrocannabinol nor an ester, an ether or a salt of THC: the generic clause of annex IV therefore does not cover it, and the substance is unclassified in France. It remains a laboratory reagent, without marketing authorisation, without novel food status and with no accepted use in cosmetics or in food. Its sale for human consumption would be unlawful on that ground.
European Union
No European classification. The molecule appears neither in the schedules of the 1961 and 1971 conventions, nor in the measures adopted under the European arrangements on new psychoactive substances, and the EUDA (formerly the EMCDDA) has never notified it through its early warning system. It circulates solely as a research chemical, with the corresponding labelling.
Sources: EUR-Lex, UNODC, CND, ANSM, IUPHAR/BPS, ChEBI, EUDA. Our method.
Structural classification
- Class
- ECS modulator (research)
- Origin
- An entirely synthetic molecule, absent from cannabis and from every living organism. It is obtained in the laboratory by coupling an amino alcohol derived from tyrosine to an oleic acid chain, and is distributed only as a reagent intended for research.
- Status
- Unscheduled
Amide d'acide gras de synthèse : une chaîne oléique liée à un aminoalcool aromatique de type tyrosinol, soit un analogue aromatique de l'oléoyléthanolamide. OMDM-2 est l'énantiomère (R) de la paire, l'énantiomère (S) portant le nom d'OMDM-1.
Pharmacokinetics
Les données se limitent au rongeur. La publication d'origine décrit une molécule stable sur le plan métabolique, car elle résiste à l'hydrolyse par la FAAH qui dégrade l'anandamide. Elle reste active chez le rat et la souris par voie intrapéritonéale ou intraveineuse, à quelques milligrammes par kilogramme, ainsi que par perfusion locale dans le cerveau. Aucune étude d'absorption, de distribution, de biodisponibilité ou de demi-vie n'a été publiée, et il n'existe aucune donnée humaine.
Metabolism
Contrairement à l'anandamide, cet amide n'est pas coupé de façon significative par la FAAH (Ki supérieur à 50 µM), ce qui explique sa persistance dans les préparations cellulaires et son qualificatif de stabilité métabolique. Les voies de dégradation réelles, hydrolases alternatives, oxydation de la chaîne oléique ou conjugaison du groupe phénol, n'ont pas été caractérisées.
Toxicology and risks
Aucune étude de toxicité réglementaire, aucune exposition humaine documentée. Les seules observations disponibles proviennent de protocoles animaux aigus : sédation, sommeil augmenté, baisse de la dopamine extracellulaire dans le noyau accumbens et réduction de l'interaction sociale. Ce dernier résultat a conduit les auteurs à rappeler qu'un inhibiteur de recapture peut abaisser la signalisation endocannabinoïde au lieu de la renforcer. La molécule est un réactif de laboratoire et ne doit pas être ingérée.
Detection and analysis
Aucune méthode de dépistage de routine. La substance n'est pas recherchée par les tests urinaires cannabinoïdes, qui ciblent les métabolites du THC, ni par les panels toxicologiques hospitaliers courants, et elle n'apparaît pas dans les signalements du système d'alerte précoce européen. Son identification supposerait une chromatographie liquide couplée à la spectrométrie de masse avec un étalon de référence.
References
- 1.Ortar G. et al., Novel selective and metabolically stable inhibitors of anandamide cellular uptake, Biochemical Pharmacology, 2003PMID 12732359
- 2.de Lago E. et al., In vivo pharmacological actions of two novel inhibitors of anandamide cellular uptake, European Journal of Pharmacology, 2004PMID 14744610
- 3.Murillo-Rodriguez E. et al., The administration of endocannabinoid uptake inhibitors OMDM-2 or VDM-11 promotes sleep and decreases extracellular levels of dopamine in rats, Physiology & Behavior, 2013PMID 23238438
- 4.Seillier A. et Giuffrida A., The cannabinoid transporter inhibitor OMDM-2 reduces social interaction, Neuropharmacology, 2018PMID 29169961
- 5.PubChem, composé CID 6604915 (OMDM-2)
Structured data
- InChIKey
- ICDMLAQPOAVWNH-HAAQQRBASA-N
- SMILES
- CCCCCCCC/C=C\CCCCCCCC(=O)N[C@H](CC1=CC=C(C=C1)O)CO
- Formula
- C27H45NO3
- Molar mass
- 431.70 g·mol⁻¹
- PubChem CID
- 6604915
LLM ingestion format: a structured superset of the entry (identifiers, binding, versioned legal status). Full corpus.