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Screening compounds

Flunitazene

Also known as Benzimidazole, 1-(2-(diethylamino)ethyl)-2-(p-fluorobenzyl)-5-nitro-, 1H-Benzimidazole-1-ethanamine, N,N-diethyl-2-((4-fluorophenyl)methyl)-5-nitro-, N,N-Diethyl-2-((4-fluorophenyl)methyl)-5-nitro-1H-benzimidazole-1-ethanamine

CAS 2249-36-7Formula C20H23FN4O2Molar mass 370.43 g/mol
Prohibited, not for trade
Why it is not for trade
Flunitazene chemical structure, C20H23FN4O2, CAS 2249-36-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2249-36-7
Formula
C20H23FN4O2
Molar mass
370.43 g/mol
HS code
293399
Category
Screening compounds

What is Flunitazene?

Plain description, key identifiers and synonyms

Flunitazene is a member of the class of benzimidazoles that is 1H-benzimidazole substituted by 2-(diethylamino)ethyl, 4-fluorobenzyl, and nitro groups at positions 1, 2, and 5, respectively. It is a synthetic opioid. It has a role as an opioid analgesic and a mu-opioid receptor agonist. It is a member of benzimidazoles, a C-nitro compound, a tertiary amino compound and a member of monofluorobenzenes.

Flunitazene is a designer drug with opioid effects.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N,N-diethyl-2-[2-[(4-fluorophenyl)methyl]-5-nitrobenzimidazol-1-yl]ethanamine
CAS number
2249-36-7
Molecular formula
C20H23FN4O2
UNII
LQS4YF6P6L
InChIKey
ZTWHIDCAGRMKTC-UHFFFAOYSA-N
InChI
InChI=1S/C20H23FN4O2/c1-3-23(4-2)11-12-24-19-10-9-17(25(26)27)14-18(19)22-20(24)13-15-5-7-16(21)8-6-15/h5-10,14H,3-4,11-13H2,1-2H3
SMILES (canonical and isomeric)
CCN(CC)CCN1C2=C(C=C(C=C2)[N+](=O)[O-])N=C1CC3=CC=C(C=C3)F

Synonyms

  • Benzimidazole, 1-(2-(diethylamino)ethyl)-2-(p-fluorobenzyl)-5-nitro-
  • 1H-Benzimidazole-1-ethanamine, N,N-diethyl-2-((4-fluorophenyl)methyl)-5-nitro-
  • N,N-Diethyl-2-((4-fluorophenyl)methyl)-5-nitro-1H-benzimidazole-1-ethanamine
  • Flunitazene (hydrochloride)
  • N,N-diethyl-2-(2-(4-fluorobenzyl)-5-nitro-1H-benzimidazol-1-yl)ethan-1-amine
  • fluonitazene
  • 4-fluoro desethoxyetonitazene
  • N,N-diethyl-2-[2-(4-fluorobenzyl)-5-nitro-1H-benzimidazol-1-yl]ethanamine
  • N,N-diethyl-2-[2-[(4-fluorophenyl)methyl]-5-nitro-benzimidazol-1-yl]ethanamine
  • N,N-diethyl-2-{2-[(4-fluorophenyl)methyl]-5-nitro-1H-benzimidazol-1-yl}ethan-1-amine

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
370.43 g/molcalc.
Exact mass
370.1805 Dacalc.
LogP (octanol/water)
4.02calc.
Topological polar surface area
64.2 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
8calc.
Heavy atoms
27calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.35calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc(Cc2nc3ccccc3[nH]2)cc1

c1ccc(Cc2nc3ccccc3[nH]2)cc1

3 rings, 16 atoms, the Bendazol ring system.

335 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Flunitazene suppliers

Trading restrictions apply to this substance

New psychoactive substance

Flunitazene is prohibited on CompoundList. Listings, quotes and messages are disabled. This page is kept for information only.

Listing and enquiries are not allowed for this substance.

Reference: UN Convention on Psychotropic Substances 1971

Our policy on controlled substances

Flunitazene price

Indicative price range per kg from live supplier offers

Prices are not shown for prohibited substances.

Uses and applications

What the substance is used for, by industry and function

Roles

  • agonist
  • analgesic
  • mu-opioid agent
  • mu-opioid receptor agonist
  • neurotransmitter agent
  • opioid agent
  • opioid analgesic
  • opioid receptor agonist
  • pharmaceutical

Regulatory status

Inventories, regulations and trade controls that list this substance

New psychoactive substance

Flunitazene is prohibited on CompoundList. Listings, quotes and messages are disabled. This page is kept for information only.

Listing and enquiries are not allowed for this substance.

Reference: UN Convention on Psychotropic Substances 1971

Our policy on controlled substances

Controls

  • US DEA controlled substance or listed chemical
  • New psychoactive substance under control

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Flunitazene is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Flunitazene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Flunitazene, based on the data on this page

What is Flunitazene?

Flunitazene is a member of the class of benzimidazoles that is 1H-benzimidazole substituted by 2-(diethylamino)ethyl, 4-fluorobenzyl, and nitro groups at positions 1, 2, and 5, respectively. It is a synthetic opioid. It has a role as an opioid analgesic and a mu-opioid receptor agonist.

What is the CAS number of Flunitazene?

The CAS registry number of Flunitazene is 2249-36-7.

What is the molecular formula and weight of Flunitazene?

The molecular formula of Flunitazene is C20H23FN4O2 and its molar mass is 370.43 g/mol.

What is Flunitazene used for?

Known uses and roles of Flunitazene include building blocks in research and laboratory, screening compounds in research and laboratory, agonist, analgesic, mu-opioid agent and 6 more.

Is Flunitazene hazardous?

No GHS hazard classification for Flunitazene is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Flunitazene?

Flunitazene is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Can I buy Flunitazene on CompoundList?

No. Flunitazene is on our prohibited list, so listings, quotes and messages for it are disabled. This page is kept for information only.

Guides for buyers

Practical guides that help when you source, ship or handle Flunitazene

Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page

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