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A13552 Chromone-2-carboxylic acid, 97%

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

Stock No. Size Price ($) Quantity Availability
A13552-06 5g 40.00
A13552-14 25g 136.00
A13552-22 100g 517.00
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Chromone-2-carboxylic acid, 97%

MDL
MFCD00006838
EINECS
225-583-0

Chemical Properties

Formula
C10H6O4
Formula Weight
190.15
Melting point
ca 260° dec.
Storage & Sensitivity
Ambient temperatures.
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-H500

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. May form combustible dust concentrations in air

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

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

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