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Heterocyclic building blocks

5-Chloropyrazinoic acid

Also known as 5-Chloropyrazine-2-carboxylic acid, 5-Chloro-pyrazine-2-carboxylic acid, 5-Chloro-2-pyrazinecarboxylic acid

CAS 36070-80-1Formula C5H3ClN2O2Molar mass 158.54 g/molEC 636-844-7
GHS signal word: Warning. Pictograms: Harmful or irritant 12 suppliers listed
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5-Chloropyrazinoic acid chemical structure, C5H3ClN2O2, CAS 36070-80-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
36070-80-1
Formula
C5H3ClN2O2
Molar mass
158.54 g/mol
EC number
636-844-7
HS code
293399
Category
Heterocyclic building blocks

What is 5-Chloropyrazinoic acid?

Plain description, key identifiers and synonyms

5-Chloropyrazinoic acid is a chemical substance with the molecular formula C5H3ClN2O2 and a molar mass of 158.54 g/mol. Its CAS registry number is 36070-80-1. The IUPAC name is 5-chloropyrazine-2-carboxylic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
5-chloropyrazine-2-carboxylic acid
CAS number
36070-80-1 CAS number cross-checked
EC number
636-844-7
Molecular formula
C5H3ClN2O2
MDL number
MFCD09033269
InChIKey
FXJOTWLLDJYKAG-UHFFFAOYSA-N
InChI
InChI=1S/C5H3ClN2O2/c6-4-2-7-3(1-8-4)5(9)10/h1-2H,(H,9,10)
SMILES (canonical and isomeric)
C1=C(N=CC(=N1)Cl)C(=O)O

Synonyms

  • 5-Chloropyrazine-2-carboxylic acid
  • 5-Chloro-pyrazine-2-carboxylic acid
  • 5-Chloro-2-pyrazinecarboxylic acid
  • Pyrazinecarboxylic acid, 5-chloro-
  • 2-carboxy-5-chloro-pyrazine
  • 5-Cholro-pyrazine-2-carboxylic acid

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
158.54 g/molcalc.
Exact mass
157.9883 Dacalc.
LogP (octanol/water)
0.83calc.
Topological polar surface area
63.08 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
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
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • 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.
  • 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.
  • 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.
  • 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

5-Chloropyrazinoic acid suppliers

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All 12 suppliers
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Where suppliers are based

12 suppliers in 3 countries

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5-Chloropyrazinoic acid price

Indicative price range per kg from live supplier offers

No published prices right now

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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 5-Chloropyrazinoic acid 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 5-Chloropyrazinoic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 5-Chloropyrazinoic acid, based on the data on this page

What is 5-Chloropyrazinoic acid?

5-Chloropyrazinoic acid is a chemical substance with the molecular formula C5H3ClN2O2 and a molar mass of 158.54 g/mol. Its CAS registry number is 36070-80-1. The IUPAC name is 5-chloropyrazine-2-carboxylic acid.

What is the CAS number of 5-Chloropyrazinoic acid?

The CAS registry number of 5-Chloropyrazinoic acid is 36070-80-1.

What is the molecular formula and weight of 5-Chloropyrazinoic acid?

The molecular formula of 5-Chloropyrazinoic acid is C5H3ClN2O2 and its molar mass is 158.54 g/mol.

What is 5-Chloropyrazinoic acid used for?

Known uses and roles of 5-Chloropyrazinoic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 5-Chloropyrazinoic acid hazardous?

5-Chloropyrazinoic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 5-Chloropyrazinoic acid?

5-Chloropyrazinoic acid 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 5-Chloropyrazinoic acid?

CompoundList lists 12 suppliers of 5-Chloropyrazinoic acid in China, United States and Japan. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 5-Chloropyrazinoic acid?

Suppliers quote 5-Chloropyrazinoic acid 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 5-Chloropyrazinoic acid

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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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