4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID

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Names

[ CAS No. ]:
56671-28-4

[ Name ]:
4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID

[Synonym ]:
4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid

Chemical & Physical Properties

[ Density]:
1.406g/cm3

[ Boiling Point ]:
383.5ºC at 760mmHg

[ Melting Point ]:
140ºC

[ Molecular Formula ]:
C9H8O4

[ Molecular Weight ]:
180.15700

[ Flash Point ]:
185.7ºC

[ Exact Mass ]:
180.04200

[ PSA ]:
67.51000

[ LogP ]:
1.49680

[ Index of Refraction ]:
1.576

MSDS

Click to get detail MSDS

Safety Information

[ Hazard Codes ]:
C

[ Risk Phrases ]:
R36/37/38

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

[ HS Code ]:
2932999099

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Ethyl bromopyruvate
  • 1,2-Cyclohexanedione
  • 1,3-Cyclohexanedione
  • 3-Bromopyruvic acid

DownStream

  • L(-)-Tryptophan
  • METHYL 4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLATE
  • 4,5,6,7-Tetrahydro-1H-indole
  • 1,5,6,7-Tetrahydro-4H-indol-4-one
  • 1-benzyl-6,7-dihydro-5H-indol-4-one
  • ethyl 4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylate
  • indol-4-ol
  • 4-Hydroxybenzofuran-3-carboxylic acid

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%