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Screening compounds

Tinopal AN

Also known as Uvitex AN, (2E)-2-[(3,5-dimethyl-1,3-benzoxazol-3-ium-2-yl)methylidene]-3,5-dimethyl-1,3-benzoxazole, 4-methylbenzenesulfonate, 2-[(E)-(3,5-Dimethyl-1,3-benzoxazol-2(3H)-ylidene)methyl]-3,5-dimethyl-1,3-benzoxazol-3-ium 4-methylbenzene-1-sulfonate

CAS 24260-77-3Formula C26H26N2O5SMolar mass 478.57 g/mol
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Tinopal AN chemical structure, C26H26N2O5S, CAS 24260-77-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
24260-77-3
Formula
C26H26N2O5S
Molar mass
478.57 g/mol
HS code
293499
Category
Screening compounds

What is Tinopal AN?

Plain description, key identifiers and synonyms

Tinopal AN is a chemical substance with the molecular formula C26H26N2O5S and a molar mass of 478.57 g/mol. Its CAS registry number is 24260-77-3. The IUPAC name is (2E)-2-[(3,5-dimethyl-1,3-benzoxazol-3-ium-2-yl)methylidene]-3,5-dimethyl-1,3-benzoxazole, 4-methylbenzenesulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2E)-2-[(3,5-dimethyl-1,3-benzoxazol-3-ium-2-yl)methylidene]-3,5-dimethyl-1,3-benzoxazole, 4-methylbenzenesulfonate
CAS number
24260-77-3 CAS number cross-checked
Molecular formula
C26H26N2O5S
InChIKey
ZFKMEDBFWMMKSI-UHFFFAOYSA-M
InChI
InChI=1S/C19H19N2O2.C7H8O3S/c1-12-5-7-16-14(9-12)20(3)18(22-16)11-19-21(4)15-10-13(2)6-8-17(15)23-19;1-6-2-4-7(5-3-6)11(8,9)10/h5-11H,1-4H3;2-5H,1H3,(H,8,9,10)/q+1;/p-1
Canonical SMILES
Cc1ccc(S(=O)(=O)[O-])cc1.Cc1ccc2c(c1)N(C)C(=Cc1oc3ccc(C)cc3[n+]1C)O2
Isomeric SMILES
CC1=CC=C(C=C1)S(=O)(=O)[O-].CC1=CC2=C(C=C1)O/C(=C/C3=[N+](C4=C(O3)C=CC(=C4)C)C)/N2C

Synonyms

  • Uvitex AN
  • (2E)-2-[(3,5-dimethyl-1,3-benzoxazol-3-ium-2-yl)methylidene]-3,5-dimethyl-1,3-benzoxazole, 4-methylbenzenesulfonate
  • 2-[(E)-(3,5-Dimethyl-1,3-benzoxazol-2(3H)-ylidene)methyl]-3,5-dimethyl-1,3-benzoxazol-3-ium 4-methylbenzene-1-sulfonate
  • Benzoxazolium, 2-((3,5-dimethyl-2(3H)-benzoxazolylidene)methyl)-3,5-dimethyl-, salt with 4-methylbenzenesulfonic acid (1:1)

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
478.57 g/molcalc.
Exact mass
478.1562 Dacalc.
LogP (octanol/water)
4.6calc.
Topological polar surface area
86.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
2calc.
Heavy atoms
34calc.
Rings
5calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0.19calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
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, C(=C1Nc2ccccc2O1)c1nc2ccccc2o1

C(=C1Nc2ccccc2O1)c1nc2ccccc2o1

4 rings, 19 atoms.

5 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.

Tinopal AN suppliers

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Tinopal AN 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

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 Tinopal AN 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 Tinopal AN is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tinopal AN, based on the data on this page

What is Tinopal AN?

Tinopal AN is a chemical substance with the molecular formula C26H26N2O5S and a molar mass of 478.57 g/mol. Its CAS registry number is 24260-77-3. The IUPAC name is (2E)-2-[(3,5-dimethyl-1,3-benzoxazol-3-ium-2-yl)methylidene]-3,5-dimethyl-1,3-benzoxazole, 4-methylbenzenesulfonate.

What is the CAS number of Tinopal AN?

The CAS registry number of Tinopal AN is 24260-77-3.

What is the molecular formula and weight of Tinopal AN?

The molecular formula of Tinopal AN is C26H26N2O5S and its molar mass is 478.57 g/mol.

What is Tinopal AN used for?

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

Is Tinopal AN hazardous?

No GHS hazard classification for Tinopal AN 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 Tinopal AN?

Tinopal AN 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 Tinopal AN?

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What is the price of Tinopal AN?

Suppliers quote Tinopal AN 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 Tinopal AN

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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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