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Heterocyclic building blocks

Chromocarb

Also known as Chromone-2-carboxylic acid, 4-Oxo-4H-1-benzopyran-2-carboxylic acid, 4-Oxo-4H-chromene-2-carboxylic acid

CAS 4940-39-0Formula C10H6O4Molar mass 190.15 g/molEC 225-583-0
GHS signal word: Warning. Pictograms: Harmful or irritant 8 suppliers listed
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Chromocarb chemical structure, C10H6O4, CAS 4940-39-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4940-39-0
Formula
C10H6O4
Molar mass
190.15 g/mol
EC number
225-583-0
HS code
293299
Category
Heterocyclic building blocks

What is Chromocarb?

Plain description, key identifiers and synonyms

4-oxo-1-benzopyran-2-carboxylic acid is a member of chromones.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-oxochromene-2-carboxylic acid
CAS number
4940-39-0 CAS number cross-checked
EC number
225-583-0
Molecular formula
C10H6O4
UNII
FY38S0790W
MDL number
MFCD00006838
InChIKey
RVMGXWBCQGAWBR-UHFFFAOYSA-N
InChI
InChI=1S/C10H6O4/c11-7-5-9(10(12)13)14-8-4-2-1-3-6(7)8/h1-5H,(H,12,13)
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=O)C=C(O2)C(=O)O

Synonyms

  • Chromone-2-carboxylic acid
  • 4-Oxo-4H-1-benzopyran-2-carboxylic acid
  • 4-Oxo-4H-chromene-2-carboxylic acid
  • Atremon
  • 4-Oxochromene-2-carboxylic acid
  • Chromocarbe
  • Cromocarbo
  • Chromonecarboxylic acid
  • 4H-1-Benzopyran-2-carboxylic acid, 4-oxo-
  • 4H-1-Benzopyran-2-carboxylicacid, 4-oxo-
  • Campel
  • Chromocarb (INN)
  • 4-Oxo-4H-1-benzopyran-2-carboxylic acid, 97%
  • 2-Chromonecarboxylic Acid
  • Fludarene (Salt/Mix)
  • Angiophtal (Salt/Mix)
  • Chromone-2-carboxilic acid
  • Chromone-2-carboxylic acid,
  • DivK1c_000471
  • 4-Oxo4H-chromene-2-carboxylic acid
  • 4-oxo-1-benzopyran-2-carboxylic acid
  • 4-Oxo-4H-chromene-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
190.15 g/molcalc.
Exact mass
190.0266 Dacalc.
LogP (octanol/water)
1.49calc.
Topological polar surface area
67.51 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
2calc.
Aromatic rings
2calc.
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, O=c1ccoc2ccccc12

O=c1ccoc2ccccc12

2 rings, 11 atoms, the Chromone ring system.

1,163 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

Chromocarb suppliers

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

All 8 suppliers
8 of 8 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

8 suppliers in 6 countries

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Chromocarb 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 Chromocarb is traded under.

HS 2932.99Indicative HS code

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

World exports in 2024
$3.81B
+10.3% vs 2023, imports $7.05B
2019 to 2024
Top exporters
  1. China28.9%
  2. Switzerland * partner reported12.7%
  3. Germany7.8%
Top importers
  1. United States49.7%
  2. China11.9%
  3. India * partner reported3.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Chromocarb, based on the data on this page

What is Chromocarb?

4-oxo-1-benzopyran-2-carboxylic acid is a member of chromones.

What is the CAS number of Chromocarb?

The CAS registry number of Chromocarb is 4940-39-0.

What is the molecular formula and weight of Chromocarb?

The molecular formula of Chromocarb is C10H6O4 and its molar mass is 190.15 g/mol.

What is Chromocarb used for?

Known uses and roles of Chromocarb include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Chromocarb hazardous?

Chromocarb 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 Chromocarb?

Chromocarb is usually classified under HS code 293299 (Heterocyclic compounds with oxygen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chromocarb?

CompoundList lists 8 suppliers of Chromocarb in United States, Canada, China, Germany and 2 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 Chromocarb?

Suppliers quote Chromocarb 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 Chromocarb

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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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