25B-NBOMe

25B-NBOMe
Clinical data
Other namesNBOMe-2C-B; Cimbi-36; Nova; BOM 2-CB; N-(2-Methoxybenzyl)-4-bromo-2,5-dimethoxyphenethylamine
Routes of
administration
Sublingual, others
Drug classSerotonin 5-HT2 receptor agonist; Serotonergic psychedelic; Hallucinogen
ATC code
  • None
Legal status
Legal status
Identifiers
  • 2-(4-bromo-2,5-dimethoxyphenyl)-N-[(2-methoxyphenyl)methyl]ethanamine
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC18H22BrNO3
Molar mass380.282 g·mol−1
3D model (JSmol)
  • COC1=CC=CC=C1CNCCC2=CC(=C(C=C2OC)Br)OC
  • InChI=1S/C18H22BrNO3/c1-21-16-7-5-4-6-14(16)12-20-9-8-13-10-18(23-3)15(19)11-17(13)22-2/h4-7,10-11,20H,8-9,12H2,1-3H3 Y
  • Key:SUXGNJVVBGJEFB-UHFFFAOYSA-N Y
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25B-NBOMe, also known as NBOMe-2C-B and Cimbi-36, is a psychedelic drug of the 25-NB (NBOMe) family derived from 2C-B. It acts as a potent full agonist for the 5HT2A receptor. Duration of effects lasts about 3 to 10 hours, although the parent compound is rapidly cleared from the blood when used in the radiolabeled form in tracer doses. Recently, Custodio et al. (2019) evaluated the potential involvement of dysregulated dopaminergic system, neuroadaptation, and brain wave changes which may contribute to the rewarding and reinforcing properties of 25B-NBOMe in rodents.

The carbon-11 labeled version of this compound ([11C]Cimbi-36) was synthesized and validated as a radioactive tracer for positron emission tomography (PET) in Copenhagen. As a 5-HT2A receptor agonist PET radioligand, [11C]Cimbi-36 was hypothesized to provide a more functional marker of these receptors. Also, [11C]Cimbi-36 is investigated as a potential marker of serotonin release and thus could serve as an indicator of serotonin levels in vivo. [11C]Cimbi-36 is now undergoing clinical trials as a PET-ligand in humans.

25B-NBOMe was first described in the scientific literature by Ralf Heim and colleagues at the Free University of Berlin by 1999.