CompoundList
Sign in
Heterocyclic compounds

Darbufelone

Also known as darbufelona, darbufelonum, (Z)-2-Amino-5-(3,5-di-tert-butyl-4-hydroxybenzylidene)thiazol-4(5H)-one

CAS 139226-28-1Formula C18H24N2O2SMolar mass 332.47 g/mol
Get quotes Safety data
Darbufelone chemical structure, C18H24N2O2S, CAS 139226-28-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
139226-28-1
Formula
C18H24N2O2S
Molar mass
332.47 g/mol
HS code
293410
Category
Heterocyclic compounds

What is Darbufelone?

Plain description, key identifiers and synonyms

Darbufelone is a chemical substance with the molecular formula C18H24N2O2S and a molar mass of 332.47 g/mol. Its CAS registry number is 139226-28-1. The IUPAC name is (5Z)-2-amino-5-[(3,5-ditert-butyl-4-hydroxyphenyl)methylidene]-1,3-thiazol-4-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(5Z)-2-amino-5-[(3,5-ditert-butyl-4-hydroxyphenyl)methylidene]-1,3-thiazol-4-one
CAS number
139226-28-1 CAS number cross-checked
Molecular formula
C18H24N2O2S
InChIKey
AKTXOQVMWSFEBQ-LCYFTJDESA-N
InChI
InChI=1S/C18H24N2O2S/c1-17(2,3)11-7-10(8-12(14(11)21)18(4,5)6)9-13-15(22)20-16(19)23-13/h7-9,21H,1-6H3,(H2,19,20,22)/b13-9-
Canonical SMILES
CC(C)(C)c1cc(C=C2SC(N)=NC2=O)cc(C(C)(C)C)c1O
Isomeric SMILES
CC(C)(C)C1=CC(=CC(=C1O)C(C)(C)C)/C=C\2/C(=O)N=C(S2)N

Synonyms

  • darbufelona
  • darbufelonum
  • (Z)-2-Amino-5-(3,5-di-tert-butyl-4-hydroxybenzylidene)thiazol-4(5H)-one
  • (5Z)-2-Amino-5-[(4-hydroxy-3,5-ditert-butyl-phenyl)methylidene]-1,3-thiazol-4-one
  • CI-1004, PD-136095-0073
  • 2-Amino-5-[1-(3,5-di-tert-butyl-4-hydroxy-phenyl)-meth-(Z)-ylidene]-thiazol-4-one, compound with methanesulfonic acid

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
332.47 g/molcalc.
Exact mass
332.1558 Dacalc.
LogP (octanol/water)
3.92calc.
Topological polar surface area
75.68 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.44calc.
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=C1N=CSC1=Cc1ccccc1

O=C1N=CSC1=Cc1ccccc1

2 rings, 13 atoms.

46 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.

Darbufelone suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Darbufelone can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Darbufelone 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.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2934.10Indicative HS code

Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the…

World exports in 2024
$3.88B
−16.1% vs 2023, imports $3.12B
2019 to 2024
Top exporters
  1. Switzerland * partner reported36.4%
  2. Ireland28.8%
  3. China10.0%
Top importers
  1. Canada33.4%
  2. United States14.4%
  3. Ireland13.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Darbufelone?

Darbufelone is a chemical substance with the molecular formula C18H24N2O2S and a molar mass of 332.47 g/mol. Its CAS registry number is 139226-28-1. The IUPAC name is (5Z)-2-amino-5-[(3,5-ditert-butyl-4-hydroxyphenyl)methylidene]-1,3-thiazol-4-one.

What is the CAS number of Darbufelone?

The CAS registry number of Darbufelone is 139226-28-1.

What is the molecular formula and weight of Darbufelone?

The molecular formula of Darbufelone is C18H24N2O2S and its molar mass is 332.47 g/mol.

What is Darbufelone used for?

Known uses and roles of Darbufelone include polymer antioxidants in plastics and polymers.

Is Darbufelone hazardous?

No GHS hazard classification for Darbufelone 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 Darbufelone?

Darbufelone is usually classified under HS code 293410 (Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Darbufelone?

Post a free request on CompoundList and suppliers of Darbufelone will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Darbufelone?

Suppliers quote Darbufelone 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 Darbufelone

Get quotes for Darbufelone

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Darbufelone
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Darbufelone with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/darbufelone-139226-28-1" title="Darbufelone structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Heterocyclic compounds or HS code 293410

Price on request
Free quotes, contact stays private
Get quotes