Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

4940-39-0 - Chromone-2-carboxylic acid, 97% - Chromocarb - 4-Oxo-4H-1-benzopyran-2-carboxylic acid - A13552 - Alfa Aesar

A13552 Chromone-2-carboxylic acid, 97%

CAS Number
4940-39-0
Synonyms
Chromocarb
4-Oxo-4H-1-benzopyran-2-carboxylic acid

Size Price ($) Quantity Availability
5g 37.44
25g 133.20
100g 412.80
Add to Cart Add to Quote Request View Item

Chromone-2-carboxylic acid, 97%

MDL
MFCD00006838
EINECS
225-583-0

Chemical Properties

Formula
C10H6O4
Formula Weight
190.15
Melting point
ca 260° dec.
Solubility
Soluble in alcohol, water, DMSO, hot methanol, and ethanol.

Applications

Chromone-2-carboxylic acid is used in the cyclic form 3?-oxopyrazolidino[4?,5??2, 3]-chroman-4-one, gives the azide of chromone-2-carboxylic acid, the curtius rearrangement of which is used to synthesize a number of 2-acylaminochromones and it is an orally active antiallergic agent.

Notes

Keep container tightly closed. Store away from oxidizing agents.

Literature References

W.J.S. Lockley. Regioselective deuteration of aromatic and α,β-unsaturated carboxylic acids via rhodium(III) chloride catalyzed exchange with deuterium oxide. Tetrahedron Letters. 1982, 23, (37), 3819-3822.

Keishi Ohara.; Kazuo Mukai. Anomalous spin polarization in the photoreduction of chromone-2-carboxylic acid with alcohol induced by hydrochloric acid. Chemical Physics Letters. 2000, 317, (6), 619-623.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,2237
Beilstein
146442
Harmonized Tariff Code
2932.99
TSCA
No
RTECS
DJ2476000

Recommended

  • A12438

    Biphenyl-4-carboxylic acid, 98%
  • A12471

    Benzo[b]thiophene-2-carboxylic acid, 98%
  • A12959

    Adamantane-1-carboxylic acid, 99%
  • A13742

    Acetone-1,3-dicarboxylic acid, 97%
  • L16319

    (R)-(+)-1-Phenylpropylamine, ChiPros 99+%, ee 98%

Recently Viewed

Chemicals

Life Science

Metals & Materials

Catalysts

Analytical & Labware