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Heterocyclic building blocks

4-Ethylpyridine

Also known as Pyridine, 4-ethyl-, gamma-Ethylpyridine, 4-Ethylpyridine, NSC 822, NSC 965, gamma-Ethylpyridine

CAS 536-75-4Formula C7H9NMolar mass 107.16 g/molEC 208-646-7
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard 2 suppliers listed
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4-Ethylpyridine chemical structure, C7H9N, CAS 536-75-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
536-75-4
Formula
C7H9N
Molar mass
107.16 g/mol
Physical form
Liquid
HS code
293339
Category
Heterocyclic building blocks
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 4-Ethylpyridine?

Plain description, key identifiers and synonyms

4-Ethylpyridine is a chemical substance with the molecular formula C7H9N and a molar mass of 107.16 g/mol. Its CAS registry number is 536-75-4.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-ethylpyridine
CAS number
536-75-4 CAS number cross-checkedOther or deprecated CAS: 151103-55-8
EC number
208-646-7
Molecular formula
C7H9N
UNII
3KW0SE2TL5
MDL number
MFCD00006450
InChIKey
VJXRKZJMGVSXPX-UHFFFAOYSA-N
InChI
InChI=1S/C7H9N/c1-2-7-3-5-8-6-4-7/h3-6H,2H2,1H3
SMILES (canonical and isomeric)
CCC1=CC=NC=C1

Synonyms

  • Pyridine, 4-ethyl-
  • gamma-Ethylpyridine
  • 4-Ethylpyridine, NSC 822, NSC 965, gamma-Ethylpyridine
  • 4-ethyl pyridine
  • 4-Ethyl-pyridine
  • 4-(C2H5)-pyridine
  • 4-Ethylpyridine, 98%
  • Pyridine, 4-ethyl-, radical ion(1+) (9CI)

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
Liquidexp.

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
107.16 g/molcalc.
Exact mass
107.0735 Dacalc.
LogP (octanol/water)
1.64calc.
Topological polar surface area
12.89 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
8calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.29calc.
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, c1ccncc1

c1ccncc1

1 ring, 6 atoms, the Pyridine ring system.

118,162 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H226Flammable liquid and vapour.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H340May cause genetic defects.
  • H350May cause cancer.
Precautionary statements (27)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • 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

4-Ethylpyridine suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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4-Ethylpyridine 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.

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Flavouring and nutrient

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 4-Ethylpyridine is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

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

The HS code shown for 4-Ethylpyridine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is 4-Ethylpyridine?

4-Ethylpyridine is a chemical substance with the molecular formula C7H9N and a molar mass of 107.16 g/mol. Its CAS registry number is 536-75-4.

What is the CAS number of 4-Ethylpyridine?

The CAS registry number of 4-Ethylpyridine is 536-75-4. Other or deprecated CAS numbers: 151103-55-8.

What is the molecular formula and weight of 4-Ethylpyridine?

The molecular formula of 4-Ethylpyridine is C7H9N and its molar mass is 107.16 g/mol.

What is 4-Ethylpyridine used for?

Known uses and roles of 4-Ethylpyridine include building blocks in research and laboratory, screening compounds in research and laboratory and flavouring and nutrient.

Is 4-Ethylpyridine hazardous?

4-Ethylpyridine carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 4-Ethylpyridine?

4-Ethylpyridine is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4-Ethylpyridine?

CompoundList lists 2 suppliers of 4-Ethylpyridine in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 4-Ethylpyridine?

Suppliers quote 4-Ethylpyridine 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 4-Ethylpyridine

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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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