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Indicators and stains

Quinaldine red

Also known as Eastman 1361, 2-(2-(4-(Dimethylamino)phenyl)ethenyl)-1-ethylquinolinium, iodide, 2-(p-Dimethylaminostyryl)quinoline ethiodide

CAS 117-92-0Formula C21H23IN2Molar mass 430.33 g/molEC 204-221-5
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Quinaldine red chemical structure, C21H23IN2, CAS 117-92-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
117-92-0
Formula
C21H23IN2
Molar mass
430.33 g/mol
EC number
204-221-5
HS code
293349
Category
Indicators and stains

What is Quinaldine red?

Plain description, key identifiers and synonyms

Quinaldine red is a chemical substance with the molecular formula C21H23IN2 and a molar mass of 430.33 g/mol. Its CAS registry number is 117-92-0. The IUPAC name is 4-[(E)-2-(1-ethylquinolin-1-ium-2-yl)ethenyl]-N,N-dimethylaniline iodide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-[(E)-2-(1-ethylquinolin-1-ium-2-yl)ethenyl]-N,N-dimethylaniline iodide
CAS number
117-92-0 CAS number cross-checkedOther or deprecated CAS: 190437-26-4
EC number
204-221-5
Molecular formula
C21H23IN2
UNII
Z70656T34N
MDL number
MFCD00011968
InChIKey
JOLANDVPGMEGLK-UHFFFAOYSA-M
InChI
InChI=1S/C21H23N2.HI/c1-4-23-20(16-12-18-7-5-6-8-21(18)23)15-11-17-9-13-19(14-10-17)22(2)3;/h5-16H,4H2,1-3H3;1H/q+1;/p-1
Canonical SMILES
CC[n+]1c(C=Cc2ccc(N(C)C)cc2)ccc2ccccc21.[I-]
Isomeric SMILES
CC[N+]1=C(C=CC2=CC=CC=C21)/C=C/C3=CC=C(C=C3)N(C)C.[I-]

Synonyms

  • Eastman 1361
  • 2-(2-(4-(Dimethylamino)phenyl)ethenyl)-1-ethylquinolinium, iodide
  • 2-(p-Dimethylaminostyryl)quinoline ethiodide
  • (E)-2-(4-(dimethylamino)styryl)-1-ethylquinolin-1-ium iodide
  • 1-Ethyl-2-p-dimethylaminostyrylquinoline iodide
  • alpha-(p-Dimethylaminophenylethylene)quinolineethiodide
  • 2-(-(4-Dimethylamino)styryl)-1-ethylquinolinium iodide
  • 2-(4-(Dimethylamino)styryl)-1-ethylquinolin-1-ium iodide
  • 2-{2-[4-(dimethylamino)phenyl]ethenyl}-1-ethylquinolin-1-ium iodide
  • Quinolinium, 2-(p-(dimethylamino)styryl)-1-ethyl-, iodide
  • Quinolinium, 2-[2-[4-(dimethylamino)phenyl]ethenyl]-1-ethyl-, iodide (1:1)
  • Chinaldinrot
  • 2-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-ethylquinolin-1-ium iodide
  • Quinaldine Red indicator
  • Quinolinium, 2-(2-(4-(dimethylamino)phenyl)ethenyl)-1-ethyl-, iodide (1:1)
  • REGID_for_CID_5702759
  • Quinolinium, 2-(2-(4-(dimethylamino)phenyl)ethenyl)-1-ethyl-, iodide
  • 2-(2-(4-(Dimethylamino)phenyl)eth
  • alpha-(p-Dimethylaminophenylethylene)quinoline ethiodide
  • {4-[(1E)-2-(1-ethyl(2-quinolyl))vinyl]phenyl}dimethylamine, iodide
  • 2-(2-(4-(Dimethylamino)phenyl)ethenyl)-1-ethylquinolinium, e-, iodide (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
430.33 g/molcalc.
Exact mass
430.0906 Dacalc.
LogP (octanol/water)
1.39calc.
Topological polar surface area
7.12 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
4calc.
Heavy atoms
24calc.
Rings
3calc.
Aromatic rings
3calc.
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(=Cc1ccc2ccccc2n1)c1ccccc1

C(=Cc1ccc2ccccc2n1)c1ccccc1

3 rings, 18 atoms.

207 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.

Quinaldine red suppliers

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Quinaldine red 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

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2933.49Indicative HS code

Compounds containing in the structure a quinoline or isoquinoline ring-system (whether…

World exports in 2024
$939M
−14.6% vs 2023, imports $1.48B
2019 to 2024
Top exporters
  1. China30.1%
  2. India * partner reported16.7%
  3. Switzerland * partner reported14.1%
Top importers
  1. United Kingdom19.2%
  2. Germany16.0%
  3. Romania8.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Quinaldine red, based on the data on this page

What is Quinaldine red?

Quinaldine red is a chemical substance with the molecular formula C21H23IN2 and a molar mass of 430.33 g/mol. Its CAS registry number is 117-92-0. The IUPAC name is 4-[(E)-2-(1-ethylquinolin-1-ium-2-yl)ethenyl]-N,N-dimethylaniline iodide.

What is the CAS number of Quinaldine red?

The CAS registry number of Quinaldine red is 117-92-0. Other or deprecated CAS numbers: 190437-26-4.

What is the molecular formula and weight of Quinaldine red?

The molecular formula of Quinaldine red is C21H23IN2 and its molar mass is 430.33 g/mol.

What is Quinaldine red used for?

Known uses and roles of Quinaldine red include indicators and stains in research and laboratory.

Is Quinaldine red hazardous?

No GHS hazard classification for Quinaldine red 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 Quinaldine red?

Quinaldine red is usually classified under HS code 293349 (Compounds containing in the structure a quinoline or isoquinoline ring-system (whether…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Quinaldine red?

CompoundList lists 1 supplier of Quinaldine red in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Quinaldine red?

Suppliers quote Quinaldine red on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

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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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