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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%

Codice CAS
4940-39-0
Sinonimi
Chromocarb
4-Oxo-4H-1-benzopyran-2-carboxylic acid

Dimensioni Prezzo ($) Quantità Disponibilità
5g 37,44
25g 133,20
100g 412,80
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Chromone-2-carboxylic acid, 97%

MDL
MFCD00006838
EINECS
225-583-0

Proprietà chimiche

Formula
C10H6O4
Peso formula
190.15
Punto di fusione
ca 260° dec.
Solubilità
Soluble in alcohol, water, DMSO, hot methanol, and ethanol.

Applicazioni

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.

Note

Keep container tightly closed. Store away from oxidizing agents.

Letteratura

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.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319-H335

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

Dichiarazioni precauzionali: 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.

Altri riferimenti

Merck
14,2237
Beilstein
146442
Codice tariffe armonizzato
2932.99
TSCA
No
RTECS
DJ2476000

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