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
  • benzyl N-{[5-(hydroxymethyl)spiro[2.3]hexan-5-yl]methyl}carbamate
  • benzyl 3-hydroxy-octahydro-1H-indole-1-carboxylate
  • Ethyl 1-amino-3-hydroxyspiro[3.3]heptane-1-carboxylate
  • benzyl N-[1-(4-hydroxypyridin-3-yl)ethyl]carbamate
  • benzyl N-(4-bromo-3,3,4,4-tetrafluorobutyl)carbamate
  • Ethyl 2-{[(tert-butoxy)carbonyl](ethyl)amino}-4-(chloromethyl)-1,3-thiazole-5-carboxylate
  • benzyl N-[6-(bromomethyl)pyridin-2-yl]carbamate
  • benzyl 3-(chlorodifluoromethyl)-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyrazine-7-carboxylate
  • benzyl N-[2-(chloromethyl)-5,6-dimethylthieno[2,3-d]pyrimidin-4-yl]carbamate
  • Ethyl 2-{[(benzyloxy)carbonyl](butyl)amino}-4-(chloromethyl)-1,3-thiazole-5-carboxylate
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