25I-NBOH

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25I-NBOH
2C-I-NBOH-skeletal.svg
Legal status
Legal status
  • DE: NpSG (Industrial and scientific use only)
  • UK: Class A
Identifiers
CAS Number
PubChem CID
ChemSpider
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC17H20INO3
Molar mass413.255 g·mol−1
3D model (JSmol)
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25I-NBOH (NBOH-2CI, Cimbi-27, 2-C-I-NBOH) is a derivative of the phenethylamine-derived hallucinogen 2C-I that was discovered in 2006 by a team at Purdue University.

Pharmacology[edit]

25I-NBOH acts as a potent agonist for the 5HT2A receptor,[1][2] with a Ki of 0.061 nM at the human 5HT2A receptor, similar to the better-known compound 25I-NBOMe, making it some twelve times the potency of 2C-I itself.

Although in vitro tests show this compound acts as an agonist, animal studies to confirm these findings have not been reported. While the N-benzyl derivatives of 2C-I had significantly increased binding to 5HT2A receptor fragments, compared to 2C-I, the N-benzyl derivatives of DOI were less active compared to DOI.[3]

25I-NBOH is notable as one of the most selective agonist ligands for the 5-HT2A receptor with an EC50 value of 0.074 nM with more than 400 times selectivity over the 5-HT2C receptor.[4]

Analytical chemistry[edit]

25I-NBOH is a labile molecule which fragments into 2C-I when analyzed by routine gas chromatography (GC) methods.[5] A specific method for reliable identification of 25I-NBOH using GC/MS has been reported, allowing forensic forces worldwide to correctly identify this compound.[6]

Legality[edit]

Sweden[edit]

The Riksdag added 25I-NBOH to Narcotic Drugs Punishments Act [sv] under Swedish schedule I ("substances, plant materials and fungi which normally do not have medical use") as of August 18, 2015, published by Medical Products Agency MPA) in regulation HSLF-FS 2015:12 listed as "25I-NBOH" and "2-([2-(4-jodo-2,5-dimetoxifenyl)etylamino]metyl)fenol".[7]

United Kingdom[edit]

This substance is a Class A drug in the United Kingdom as a result of the N-benzylphenethylamine catch-all clause in the Misuse of Drugs Act 1971.[8]


Analogues and derivatives[edit]

References[edit]

  1. ^ Ettrup A, Hansen M, Santini MA, Paine J, Gillings N, Palner M, et al. (April 2011). "Radiosynthesis and in vivo evaluation of a series of substituted 11C-phenethylamines as 5-HT (2A) agonist PET tracers". European Journal of Nuclear Medicine and Molecular Imaging. 38 (4): 681–93. doi:10.1007/s00259-010-1686-8. PMID 21174090.
  2. ^ Silva ME, Heim R, Strasser A, Elz S, Dove S (January 2011). "Theoretical studies on the interaction of partial agonists with the 5-HT2A receptor". Journal of Computer-Aided Molecular Design. 25 (1): 51–66. Bibcode:2011JCAMD..25...51S. CiteSeerX 10.1.1.688.2670. doi:10.1007/s10822-010-9400-2. PMID 21088982.
  3. ^ Braden MR, Parrish JC, Naylor JC, Nichols DE (December 2006). "Molecular interaction of serotonin 5-HT2A receptor residues Phe339(6.51) and Phe340(6.52) with superpotent N-benzyl phenethylamine agonists". Molecular Pharmacology. 70 (6): 1956–64. doi:10.1124/mol.106.028720. PMID 17000863. S2CID 15840304.
  4. ^ Hansen M, Phonekeo K, Paine JS, Leth-Petersen S, Begtrup M, Bräuner-Osborne H, Kristensen JL (March 2014). "Synthesis and structure-activity relationships of N-benzyl phenethylamines as 5-HT2A/2C agonists". ACS Chemical Neuroscience. 5 (3): 243–9. doi:10.1021/cn400216u. PMC 3963123. PMID 24397362.
  5. ^ Arantes LC, Júnior EF, de Souza LF, Cardoso AC, Alcântara TL, Lião LM, et al. (2017). "2A receptor agonist identified in blotter paper seizures in Brazil". Forensic Toxicology. 35 (2): 408–414. doi:10.1007/s11419-017-0357-x. PMC 5486617. PMID 28706567.
  6. ^ Neto JC, Andrade AF, Lordeiro RA, Machado Y, Elie M, Júnior EF, Arantes LC (2017). "Preventing misidentification of 25I-NBOH as 2C-I on routine GC–MS analyses" (PDF). Forensic Toxicology. 35 (2): 415–420. doi:10.1007/s11419-017-0362-0.
  7. ^ "Gemensamma författningssamlingen avseende hälso- och sjukvård, socialtjänst, läkeme del, folkhälsa m.m." (PDF). Lakemedelsverket. Archived from the original (PDF) on 2017-10-30. Retrieved 2017-04-21.
  8. ^ "The Misuse of Drugs Act 1971 (Ketamine etc.) (Amendment) Order 2014". www.legislation.gov.uk.