4-Oxo-4H-pyran-2-carboxylic acid

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Names

[ CAS No. ]:
499-05-8

[ Name ]:
4-Oxo-4H-pyran-2-carboxylic acid

[Synonym ]:
4H-Pyran-2-carboxylic acid, 4-oxo-
4-oxo-4H-pyrane-2-carboxylic acid
COMANIC ACID
4-Oxo-4H-pyran-2-carbonsaeure
γ-Pyrone-2-carboxylic Acid
4-Oxo-4H-pyran-2-carboxylic acid

Chemical & Physical Properties

[ Density]:
1.5±0.1 g/cm3

[ Boiling Point ]:
354.5±37.0 °C at 760 mmHg

[ Molecular Formula ]:
C6H4O4

[ Molecular Weight ]:
140.094

[ Flash Point ]:
160.0±20.0 °C

[ Exact Mass ]:
140.010956

[ PSA ]:
67.51000

[ LogP ]:
-0.56

[ Vapour Pressure ]:
0.0±1.7 mmHg at 25°C

[ Index of Refraction ]:
1.577

MSDS

Click to get detail MSDS

Safety Information

[ Risk Phrases ]:
36/37/38

[ Safety Phrases ]:
26-36/37/39

[ HS Code ]:
2932999099

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 1,2,3,4-TETRA-O-ACETYL-?-D-GLUCURONIC ACID
  • diethyl isochelidonate
  • α-D-Glucopyranuronic acid
  • Ethanoic anhydride
  • Ethyl 4-oxo-4H-pyran-2-carboxylate
  • Chelidonic acid
  • d-galacturonic acid

DownStream

  • 4H-pyran-4-one
  • Formic Acid
  • Oxalic acid
  • Acetone

Customs

[ HS Code ]: 2932999099

[ Summary ]:
2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Related Compounds

  • 5-ethoxy-4-oxo-4H-pyran-2-carboxylic acid
  • 5-Hydroxy-4-oxo-4H-pyran-2-carboxylic acid
  • 5-Methoxy-4-oxo-4H-pyran-2-carboxylic acid
  • 4-oxo-4H-pyran-2-carboxylic acid ethyl ester
  • 3-Benzyloxy-4-oxo-4H-pyran-2-carboxylic acid
  • 3,5-dimethyl-4-oxo-4H-pyran-2-carboxylic acid
  • 5-[(Prop-2-en-1-yloxy)carbonyl]-5-azaspiro[3.4]octane-2-carboxylic acid
  • 3-[(Prop-2-en-1-yloxy)carbonyl]-3-azabicyclo[3.2.1]octane-1-carboxylic acid
  • Lithium 3-[(perfluorooctane-1-sulfonyl)(propyl)amino]propanoate
  • (4E)-1-[(prop-2-en-1-yloxy)carbonyl]-1,2,3,6,7,8-hexahydroazocine-4-carboxylic acid
  • 2-{2-[(Prop-2-en-1-yloxy)carbonyl]-2-azabicyclo[2.2.1]heptan-5-yl}acetic acid
  • 3-[[(Perfluorooctyl)sulfonyl]amino]-N,N-dimethyl-N-propyl-1-propanaminium bromide
  • rac-(1R,4S,5S)-4-{[(prop-2-en-1-yloxy)carbonyl]amino}bicyclo[3.2.0]heptane-1-carboxylic acid
  • 3-[(4-chloro-3-methylphenyl)methyl]-1-[5-(2-fluorophenyl)-1-methyl-2-oxo-2,3-dihydro-1H-1,4-benzodiazepin-3-yl]urea
  • rac-(1R,3S,5R,6R)-6-{[(prop-2-en-1-yloxy)carbonyl]amino}bicyclo[3.2.0]heptane-3-carboxylic acid
  • 18-(Perfluorooctyl)-17-methyl-5,8,11,14-tetraoxa-18-thia-17-azaoctadecane-1-sulfonate 18,18-dioxide sodium
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