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Heterocyclic building blocks

2-Bromopyrazine

Also known as pyrazine, 2-bromo-, Pyrazine, bromo-, Bromopyrazine

CAS 56423-63-3Formula C4H3BrN2Molar mass 158.99 g/molEC 640-230-4
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 4 suppliers listed
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2-Bromopyrazine chemical structure, C4H3BrN2, CAS 56423-63-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
56423-63-3
Formula
C4H3BrN2
Molar mass
158.99 g/mol
EC number
640-230-4
HS code
293399
Category
Heterocyclic building blocks

What is 2-Bromopyrazine?

Plain description, key identifiers and synonyms

2-Bromopyrazine is a chemical substance with the molecular formula C4H3BrN2 and a molar mass of 158.99 g/mol. Its CAS registry number is 56423-63-3.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-bromopyrazine
CAS number
56423-63-3 CAS number cross-checked
EC number
640-230-4
Molecular formula
C4H3BrN2
MDL number
MFCD08275680
InChIKey
WGFCNCNTGOFBBF-UHFFFAOYSA-N
InChI
InChI=1S/C4H3BrN2/c5-4-3-6-1-2-7-4/h1-3H
SMILES (canonical and isomeric)
C1=CN=C(C=N1)Br

Synonyms

  • pyrazine, 2-bromo-
  • Pyrazine, bromo-
  • Bromopyrazine
  • 2-Bromopyrazine, AldrichCPR
  • 2-Bromo-pyrazine
  • 5-bromopyrazine
  • Brom-pyrazin
  • 2-Bromopyrazine, 97%

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
158.99 g/molcalc.
Exact mass
157.948 Dacalc.
LogP (octanol/water)
1.24calc.
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
0calc.
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
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

2-Bromopyrazine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
4 of 4 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

4 suppliers in 2 countries

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2-Bromopyrazine 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

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

Frequently asked questions

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

What is 2-Bromopyrazine?

2-Bromopyrazine is a chemical substance with the molecular formula C4H3BrN2 and a molar mass of 158.99 g/mol. Its CAS registry number is 56423-63-3.

What is the CAS number of 2-Bromopyrazine?

The CAS registry number of 2-Bromopyrazine is 56423-63-3.

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

The molecular formula of 2-Bromopyrazine is C4H3BrN2 and its molar mass is 158.99 g/mol.

What is 2-Bromopyrazine used for?

Known uses and roles of 2-Bromopyrazine include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2-Bromopyrazine hazardous?

2-Bromopyrazine carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Bromopyrazine?

2-Bromopyrazine 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-Bromopyrazine?

CompoundList lists 4 suppliers of 2-Bromopyrazine in China and 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 2-Bromopyrazine?

Suppliers quote 2-Bromopyrazine 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-Bromopyrazine

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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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