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Basic and cationic dyes

Basic Yellow 11 base

Also known as C.I.Basic Yellow 11, Aizen Cathilon Yellow3GH, 2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]aniline

CAS 47440-84-6Formula C21H25N2O2+Molar mass 337.44 g/mol
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Basic Yellow 11 base chemical structure, C21H25N2O2+, CAS 47440-84-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
47440-84-6
Formula
C21H25N2O2+
Molar mass
337.44 g/mol
HS code
320413
Category
Basic and cationic dyes

What is Basic Yellow 11 base?

Plain description, key identifiers and synonyms

Basic Yellow 11 base is a chemical substance with the molecular formula C21H25N2O2+ and a molar mass of 337.44 g/mol. Its CAS registry number is 47440-84-6. The IUPAC name is 2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]aniline.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]aniline
CAS number
47440-84-6 CAS number cross-checked
Molecular formula
C21H25N2O2+
InChIKey
QWIGSMCPAKBYLY-UHFFFAOYSA-O
InChI
InChI=1S/C21H24N2O2/c1-21(2)16-8-6-7-9-18(16)23(3)20(21)12-13-22-17-11-10-15(24-4)14-19(17)25-5/h6-14H,1-5H3/p+1
Canonical SMILES
COc1ccc(NC=CC2=[N+](C)c3ccccc3C2(C)C)c(OC)c1
Isomeric SMILES
CC1(C2=CC=CC=C2[N+](=C1/C=C/NC3=C(C=C(C=C3)OC)OC)C)C

Synonyms

  • C.I.Basic Yellow 11
  • Aizen Cathilon Yellow3GH
  • 2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]aniline
  • 2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)vinyl]aniline
  • 3H-Indolium, 2-[2-[(2,4-dimethoxyphenyl)amino]ethenyl]-1,3,3-trimethyl-
  • 3H-Pseudoindolium chloride, {2-[2-(2,4-dimethoxyanilino)-} vinyl]-1, 3,3-trimethyl-
  • N-(2,4-Dimethoxyphenyl)-N-(2-(1,3,3-trimethyl-3H-1lambda~5~-indol-2-yl)vinyl)amine hydrochloride

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
337.44 g/molcalc.
Exact mass
337.1911 Dacalc.
LogP (octanol/water)
4.34calc.
Topological polar surface area
33.5 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
5calc.
Heavy atoms
25calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.29calc.
Formal charge
1calc.
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, C(=CC1=Nc2ccccc2C1)Nc1ccccc1

C(=CC1=Nc2ccccc2C1)Nc1ccccc1

3 rings, 18 atoms.

25 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.

Basic Yellow 11 base suppliers

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Basic Yellow 11 base 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

Industries and functions

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 Basic Yellow 11 base is traded under.

HS 3204.13Indicative HS code

Basic dyes and preparations based thereon

World exports in 2024
$209M
−2.6% vs 2023, imports $224M
2019 to 2024
Top exporters
  1. India * partner reported27.9%
  2. China21.8%
  3. Spain6.6%
Top importers
  1. United States11.2%
  2. China7.9%
  3. Germany7.4%

* Partner reported figures, a lower bound.

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

The HS code shown for Basic Yellow 11 base is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Basic Yellow 11 base, based on the data on this page

What is Basic Yellow 11 base?

Basic Yellow 11 base is a chemical substance with the molecular formula C21H25N2O2+ and a molar mass of 337.44 g/mol. Its CAS registry number is 47440-84-6. The IUPAC name is 2,4-dimethoxy-N-[(E)-2-(1,3,3-trimethylindol-1-ium-2-yl)ethenyl]aniline.

What is the CAS number of Basic Yellow 11 base?

The CAS registry number of Basic Yellow 11 base is 47440-84-6.

What is the molecular formula and weight of Basic Yellow 11 base?

The molecular formula of Basic Yellow 11 base is C21H25N2O2+ and its molar mass is 337.44 g/mol.

What is Basic Yellow 11 base used for?

Known uses and roles of Basic Yellow 11 base include textile dyes in textiles and leather.

Is Basic Yellow 11 base hazardous?

No GHS hazard classification for Basic Yellow 11 base 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 Basic Yellow 11 base?

Basic Yellow 11 base is usually classified under HS code 320413 (Basic dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Basic Yellow 11 base?

Post a free request on CompoundList and suppliers of Basic Yellow 11 base will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Basic Yellow 11 base?

Suppliers quote Basic Yellow 11 base 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 Basic Yellow 11 base

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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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