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
  • 1-(2,5-dimethoxyphenyl)-4-(3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl)-1H-1,2,3-triazol-5-amine
  • 4-[3-(4-ethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1-(2-methylphenyl)-1H-1,2,3-triazol-5-amine
  • 4-(3-(4-ethoxyphenyl)-1,2,4-oxadiazol-5-yl)-1-(2-fluorophenyl)-1H-1,2,3-triazol-5-amine
  • 1-(2-chlorophenyl)-4-(3-(4-ethoxyphenyl)-1,2,4-oxadiazol-5-yl)-1H-1,2,3-triazol-5-amine
  • 3-{[2-(Cyclohex-1-en-1-yl)ethyl]amino}-1-(3-fluoro-4-methylphenyl)-1,2-dihydropyrazin-2-one
  • 3-(3,4-dimethoxyphenyl)-5-[3-(2,4-dimethoxyphenyl)-1H-pyrazol-5-yl]-1,2,4-oxadiazole
  • 4-((2-(4-fluorophenyl)-1,1-dioxido-3-oxo-2H-benzo[e][1,2,4]thiadiazin-4(3H)-yl)methyl)benzonitrile
  • Methyl 2-oxo-4-phenyl-6-[(thiophene-2-sulfonyl)methyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylate
  • 1-(2,5-dimethylbenzyl)-3-(p-tolyl)tetrahydro-1H-thieno[3,4-d]imidazol-2(3H)-one 5,5-dioxide
  • 1-butyl-3-((3,5-dimethylphenyl)sulfonyl)-6-fluoro-7-morpholinoquinolin-4(1H)-one
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