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Impurities and reference standards

2,4-Diethylthioxanthone

Also known as 9H-Thioxanthen-9-one, 2,4-diethyl-, Chemcure detx, DETX-S

CAS 82799-44-8Formula C17H16OSMolar mass 268.38 g/molEC 280-041-0
GHS signal word: Warning. Pictograms: Harmful or irritant 28 suppliers listed
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2,4-Diethylthioxanthone chemical structure, C17H16OS, CAS 82799-44-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
82799-44-8
Formula
C17H16OS
Molar mass
268.38 g/mol
Physical form
Crystals
HS code
293499
Category
Impurities and reference standards
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 2,4-Diethylthioxanthone?

Plain description, key identifiers and synonyms

2,4-Diethylthioxanthone is a chemical substance with the molecular formula C17H16OS and a molar mass of 268.38 g/mol. Its CAS registry number is 82799-44-8. The IUPAC name is 2,4-diethylthioxanthen-9-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,4-diethylthioxanthen-9-one
CAS number
82799-44-8 CAS number cross-checked
EC number
280-041-0
Molecular formula
C17H16OS
UNII
U5V0PD7FHZ
MDL number
MFCD00082910
InChIKey
BTJPUDCSZVCXFQ-UHFFFAOYSA-N
InChI
InChI=1S/C17H16OS/c1-3-11-9-12(4-2)17-14(10-11)16(18)13-7-5-6-8-15(13)19-17/h5-10H,3-4H2,1-2H3
SMILES (canonical and isomeric)
CCC1=CC(=C2C(=C1)C(=O)C3=CC=CC=C3S2)CC

Synonyms

  • 9H-Thioxanthen-9-one, 2,4-diethyl-
  • Chemcure detx
  • DETX-S
  • 2,4-Diethyl-9H-thioxanthen-9-one
  • 2,4-Diethylthioxanthen-9-one
  • DETX
  • 2,4-diethyldibenzo[b,e]thiin-10-one
  • diethylthioxanthenone
  • Chlorprothixene Impurity 7
  • 2, 4-diethyl thioxanthone
  • 2,4-diethylthioxanthene-9-one
  • 2,4-Diethyl-9H-thioxanthen-9
  • 2,4-diethyl-9H-thioxanthene 10-oxide
  • 2,4-Diethyl-9H-thioxanthen-9-one, 98%
  • 2,4-Diethyl-9H-thioxanthen-9-one Solution in Acetonitrile, 1000ug/mL
  • 2,4-Diethyl-9H-thioxanthen-9-one Solution in Acetonitrile, 100ug/mL

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

Physical form
Crystalsexp.

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
268.38 g/molcalc.
Exact mass
268.0922 Dacalc.
LogP (octanol/water)
4.54calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
19calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.24calc.
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, O=c1c2ccccc2sc2ccccc12

O=c1c2ccccc2sc2ccccc12

3 rings, 15 atoms, the Thioxanthone ring system.

254 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H317May cause an allergic skin reaction.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (9)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

2,4-Diethylthioxanthone suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 28 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

28 suppliers in 5 countries

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2,4-Diethylthioxanthone price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Pigment, Photosensitive agent, Hardener.

Consumer uses: Photosensitive agent, Hardener, Pigment.

Functional uses

  • Catalyst
  • Photosensitizers

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Added by a premanufacture notice, significant new use rule

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2,4-Diethylthioxanthone 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 2,4-Diethylthioxanthone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,4-Diethylthioxanthone, based on the data on this page

What is 2,4-Diethylthioxanthone?

2,4-Diethylthioxanthone is a chemical substance with the molecular formula C17H16OS and a molar mass of 268.38 g/mol. Its CAS registry number is 82799-44-8. The IUPAC name is 2,4-diethylthioxanthen-9-one.

What is the CAS number of 2,4-Diethylthioxanthone?

The CAS registry number of 2,4-Diethylthioxanthone is 82799-44-8.

What is the molecular formula and weight of 2,4-Diethylthioxanthone?

The molecular formula of 2,4-Diethylthioxanthone is C17H16OS and its molar mass is 268.38 g/mol.

What is 2,4-Diethylthioxanthone used for?

Industrial uses: Pigment, Photosensitive agent, Hardener. Consumer uses: Photosensitive agent, Hardener, Pigment.

Is 2,4-Diethylthioxanthone hazardous?

2,4-Diethylthioxanthone carries the GHS signal word "Warning". Main hazards: may cause an allergic skin reaction, may cause long lasting harmful effects to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2,4-Diethylthioxanthone?

2,4-Diethylthioxanthone 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.

Where can I buy 2,4-Diethylthioxanthone?

CompoundList lists 28 suppliers of 2,4-Diethylthioxanthone in China, United States, Germany, Japan and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 2,4-Diethylthioxanthone?

Suppliers quote 2,4-Diethylthioxanthone on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2,4-Diethylthioxanthone

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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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