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Impurities and reference standards

2-Methylpyrazine

Also known as Methylpyrazine, Pyrazine, methyl-, Pyrazine, 2-methyl-

CAS 109-08-0Formula C5H6N2Molar mass 94.12 g/molEC 203-645-8
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant 32 suppliers listed
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2-Methylpyrazine chemical structure, C5H6N2, CAS 109-08-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
109-08-0
Formula
C5H6N2
Molar mass
94.12 g/mol
Physical form
Liquid
HS code
293399
Category
Impurities and reference standards
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2-Methylpyrazine?

Plain description, key identifiers and synonyms

Methylpyrazine is a member of the class of pyrazines that is pyrazine in which one of the hydrogens is replaced by a methyl group. It is a flavouring agent found in coffee, peanuts and red peppers. It has a role as a flavouring agent, a plant metabolite and a Maillard reaction product.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methylpyrazine
CAS number
109-08-0 CAS number cross-checkedOther or deprecated CAS: 10-98-0
EC number
203-645-8
Molecular formula
C5H6N2
UNII
RVC6500U9C
MDL number
MFCD00006142
InChIKey
CAWHJQAVHZEVTJ-UHFFFAOYSA-N
InChI
InChI=1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3
SMILES (canonical and isomeric)
CC1=NC=CN=C1

Synonyms

  • Methylpyrazine
  • Pyrazine, methyl-
  • Pyrazine, 2-methyl-
  • 2-Methyl-1,4-diazine
  • 2-methyl-pyrazine
  • methyl-pyrazine
  • pyrazine, 2-methyl
  • methyl pyrazine
  • 2-Methyl pyrazine
  • 5-methylpyrazine
  • monomethylpyrazine
  • 5-methyl pyrazine
  • 2-methylpyrazine CRS
  • Glucosamine Impurity 5
  • 2-Methyl-1,4-diazinen
  • 2-Methylpyrazine (Standard)
  • 2-Methylpyrazine, >=99%
  • Glucosamine sulfate Impurity 15
  • 2- Methylpyrazine, Methylpyrazine.
  • 2-Methylpyrazine, >=99%, FCC, FG
  • 2-Methylpyrazine Solution in Methanol, 1000ug/mL
  • 2-Methylpyrazine Solution in Methanol, 100ug/mL
  • 2-Methylpyrazine(Discontinued,See C4X-194615)
  • 2-Methylpyrazine, European Pharmacopoeia (EP) Reference Standard
  • 2-Methylpyrazine, Pharmaceutical Secondary Standard, Certified Reference Material

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
94.12 g/molcalc.
Exact mass
94.0531 Dacalc.
LogP (octanol/water)
0.79calc.
Topological polar surface area
25.78 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.2calc.
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, c1cnccn1

c1cnccn1

1 ring, 6 atoms, the Pyrazine ring system.

6,118 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H226Flammable liquid and vapour.
  • H302Harmful if swallowed.
Precautionary statements (15)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P330Rinse mouth.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

2-Methylpyrazine suppliers

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Where suppliers are based

32 suppliers in 7 countries

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2-Methylpyrazine 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

Roles

  • Maillard reaction product
  • additive
  • eukaryotic metabolite
  • flavouring agent
  • food additive
  • food component
  • metabolite
  • physiological role
  • plant metabolite
  • thermal degradation product

Functional uses

  • Flavouring and nutrient
  • Fragrance

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 2-Methylpyrazine is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

The HS code shown for 2-Methylpyrazine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Methylpyrazine, based on the data on this page

What is 2-Methylpyrazine?

Methylpyrazine is a member of the class of pyrazines that is pyrazine in which one of the hydrogens is replaced by a methyl group. It is a flavouring agent found in coffee, peanuts and red peppers. It has a role as a flavouring agent, a plant metabolite and a Maillard reaction product.

What is the CAS number of 2-Methylpyrazine?

The CAS registry number of 2-Methylpyrazine is 109-08-0. Other or deprecated CAS numbers: 10-98-0.

What is the molecular formula and weight of 2-Methylpyrazine?

The molecular formula of 2-Methylpyrazine is C5H6N2 and its molar mass is 94.12 g/mol.

What is 2-Methylpyrazine used for?

Known uses and roles of 2-Methylpyrazine include flavors in food and beverage, flavoring agents in flavors and fragrances, sulfur and nitrogen aroma compounds in flavors and fragrances, maillard reaction product, additive and 10 more.

Is 2-Methylpyrazine hazardous?

2-Methylpyrazine carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Methylpyrazine?

2-Methylpyrazine is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Methylpyrazine?

CompoundList lists 32 suppliers of 2-Methylpyrazine in China, United States, Canada, Egypt and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 2-Methylpyrazine?

Suppliers quote 2-Methylpyrazine 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 2-Methylpyrazine

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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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