4-Oxo-4H-1-benzopyran-2-carboxylic acid, CAS No. 4940-39-0

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4-Oxo-4H-1-benzopyran-2-carboxylic acid CAS No.4940-39-0 / Cat No.EBD18490

Formula: C10H6O4

Molecular Weight:190.15

Synonyms:

Chromocarb~4-Oxo-4H-1-benzopyran-2-carboxylic acid

4-oxo-4H-chromene-2-carboxylic acid

Chromocarb

4-oxo-4H-chromene-2-carboxylate

Chromone-2-carboxylic acid

4-Oxo-4H-1-benzopyran-2-carboxylic acid

Chromocarb~4-Oxo-4H-1-benzopyran-2-carboxylic acid

4-oxo-4H-chromene-2-carboxylic acid

Chromocarb

4-oxo-4H-chromene-2-carboxylate

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Packaging	Purity	Availability	Price (USD)	Quantity
100.0g	97.0%	Available to ship on 06-May-2024	261.9	- +	ADD TO CART
200.0g	97.0%	Available to ship on 06-May-2024	348.84	- +	ADD TO CART

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250.0g	97.0%	Available to ship on 06-May-2024	373.91	- +	ADD TO CART
500.0g	97.0%	Available to ship on 06-May-2024	579.17	- +	ADD TO CART

1.0kg	97.0%	Available to ship on 06-May-2024	913.95	- +	ADD TO CART
2.0kg	97.0%	Available to ship on 06-May-2024	1753.73	- +	ADD TO CART

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Properties
Safety Information
NMR Spectrum

Properties

Appearance:

white to light yellow crystal powder
Density:

1.493 g/cm3
Melting point:

260 °C (dec.)(lit.)
Boiling point:

337 °C at 760 mmHg
Flashing point:

138.9 °C
Solubility:

sparingly soluble

Safety Information

Symbol:
Signal words:

Warning
Hazard statements:

H315 Causes skin irritation.

H319 Causes serious eye irritation.

H335 May cause respiratory irritation.
Precautionary statements:

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

NMR Spectrum

Prediction： 1H NMR (DMSO-d6, 300 MHz) delta 8.03 (m, 1 H), 7.85 (m, 1 H), 7.71 (m, 1 H), 7.51 (m, 1 H), 6.89 (s, 1 H)

¹H NMR

¹³C NMR