CompoundList

Difethialone

Also known as Difethiaro, Baraki, LM 2219, 3-[3-[4-(4-bromophenyl)phenyl]-1,2,3,4-tetrahydronaphthalen-1-yl]-2-hydroxythiochromen-4-one

CAS 104653-34-1Formula C31H23BrO2SMolar mass 539.49 g/mol
Controlled, licensed buyers only
Difethialone chemical structure, C31H23BrO2S, CAS 104653-34-1
2D chemical structure

Key facts

What buyers check first

CAS number
104653-34-1
Formula
C31H23BrO2S
Molar mass
539.49 g/mol
HS code
293499
Category
Screening compounds

What is Difethialone?

Plain description, key identifiers and synonyms

Difethialone is a member of benzenes, a member of naphthalenes and a ring assembly.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-[3-[4-(4-bromophenyl)phenyl]-1,2,3,4-tetrahydronaphthalen-1-yl]-2-hydroxythiochromen-4-one
CAS number
104653-34-1 CAS number cross-checked
Molecular formula
C31H23BrO2S
UNII
KOL4VXI5O0
InChIKey
VSVAQRUUFVBBFS-UHFFFAOYSA-N
InChI
InChI=1S/C31H23BrO2S/c32-24-15-13-20(14-16-24)19-9-11-21(12-10-19)23-17-22-5-1-2-6-25(22)27(18-23)29-30(33)26-7-3-4-8-28(26)35-31(29)34/h1-16,23,27,34H,17-18H2
SMILES (canonical and isomeric)
C1C(CC2=CC=CC=C2C1C3=C(SC4=CC=CC=C4C3=O)O)C5=CC=C(C=C5)C6=CC=C(C=C6)Br

Synonyms

  • Difethiaro
  • Baraki, LM 2219
  • 3-[3-[4-(4-bromophenyl)phenyl]-1,2,3,4-tetrahydronaphthalen-1-yl]-2-hydroxythiochromen-4-one
  • 3-(3-(4'-Bromo(1,1'-biphenyl)-4-yl)-1,2,3,4-tetrahydro-1-naphthalenyl)-4-hydroxy-2H-1-benzothiapyran-2-one
  • 3-[3-(4'-Bromo[1,1'-biphenyl]-4-yl)-1,2,3,4-tetrahydro-1-naphthalenyl]-4-hydroxy-2H-1-benzothiopyran-2-one
  • 3-(3-(4'-bromo-[1,1'-biphenyl]-4-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)-4-hydroxy-2H-thiochromen-2-one
  • C31H23BrO2S
  • Difethialon
  • Difethiarol (JAN)
  • 3-[3-[4-(4-bromophenyl)phenyl]tetralin-1-yl]-2-hydroxy-thiochromen-4-one
  • Difethialone 10 |Ig/mL in Acetonitrile
  • 2H-1-Benzothiapyran-2-one, 3-(3-(4'-bromo(1,1'-biphenyl)-4-yl)-1,2,3,4-tetrahydro-1-naphthalenyl)-4-hydroxy-
  • 2H-1-Benzothiopyran-2-one, 3-(3-(4'-bromo(1,1'-biphenyl)-4-yl)-1,2,3,4-tetrahydro-1-naphthalenyl)-4-hydroxy-
  • Difethialone 10 microg/mL in Acetonitrile
  • (3-[3-[4-(4-bromophenyl) phenyl]-1,2,3,4-tetrahydronaphthalen-1-yl]-2-hydroxythiochromen-4-one
  • 3-[3-(4'-Bromo[1,1'-biphenyl]-4-yl)-1,2,3,4-tetrahydronaphthalen-1-yl]-4-hydroxy-2H-1-benzothiopyran-2-one

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
539.49 g/molcalc.
Exact mass
538.0602 Dacalc.
LogP (octanol/water)
8.26calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
35calc.
Rings
6calc.
Aromatic rings
5calc.
Fraction sp3 carbons
0.13calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Fails (2 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, O=c1c(C2CC(c3ccc(-c4ccccc4)cc3)Cc3ccccc32)csc2ccccc12

O=c1c(C2CC(c3ccc(-c4ccccc4)cc3)Cc3ccccc32)csc2ccccc12

6 rings, 33 atoms.

No other chemical in our database has 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.

Difethialone suppliers

Controlled substance, listings of documented suppliers only, in the documented ranking

Pesticide toxic

Difethialone is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.

Difethialone

Reference: Highly hazardous pesticide, WHO class Ia or Ib

Our policy on controlled substances
No documented supplier lists it yet

Licensed buyers can post a request for Difethialone with their licence. Our compliance team reviews it before suppliers see it.

Difethialone price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

Pesticide toxic

Difethialone is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.

Difethialone

Reference: Highly hazardous pesticide, WHO class Ia or Ib

Our policy on controlled substances

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Difethialone (ISO), 3-[3-(4′-bromobiphenyl-4-yl)-1,2,3,4-tetrahydronaphthalen-1-yl]- 4-hydroxy-2H-1-benzothiopyran-2-one, Ref no: 1635, Annex ref: II/1635

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Difethialone?

Difethialone is a member of benzenes, a member of naphthalenes and a ring assembly.

What is the CAS number of Difethialone?

The CAS registry number of Difethialone is 104653-34-1.

What is the molecular formula and weight of Difethialone?

The molecular formula of Difethialone is C31H23BrO2S and its molar mass is 539.49 g/mol.

What is Difethialone used for?

Known uses and roles of Difethialone include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Difethialone hazardous?

No GHS hazard classification for Difethialone 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 Difethialone?

Difethialone is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Can I buy Difethialone on CompoundList?

Difethialone is a controlled substance. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed by our compliance team before suppliers see it.

Guides for buyers

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

Request as a licensed buyer

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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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