3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid

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Names

[ CAS No. ]:
134997-87-8

[ Name ]:
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid

[Synonym ]:
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid
3-oxo-4H-1,4-benzoxazine-6-carboxylic acid
2H-1,4-Benzoxazine-6-carboxylic acid, 3,4-dihydro-3-oxo-
3-Oxo-3,4-dihydro-2H-benzo[1,4]oxazine-6-carboxylic acid

Chemical & Physical Properties

[ Density]:
1.5±0.1 g/cm3

[ Boiling Point ]:
471.4±45.0 °C at 760 mmHg

[ Melting Point ]:
310-314℃

[ Molecular Formula ]:
C9H7NO4

[ Molecular Weight ]:
193.156

[ Flash Point ]:
238.9±28.7 °C

[ Exact Mass ]:
193.037506

[ PSA ]:
75.63000

[ LogP ]:
0.87

[ Vapour Pressure ]:
0.0±1.2 mmHg at 25°C

[ Index of Refraction ]:
1.609

Safety Information

[ Hazard Codes ]:
Xn

[ HS Code ]:
2934999090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Bromoacetyl bromide
  • 3-Amino-4-hydroxybenzoic acid
  • METHYL 3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZINE-6-CARBOXYLATE
  • Chloroacetyl chloride
  • 3-(2-chloro-acetylamino)-4-hydroxy-benzoic acid methyl ester
  • Orthocaine

DownStream

  • METHYL 3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZINE-6-CARBOXYLATE
  • ETHYL 3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZINE-6-CARBOXYLATE

Customs

[ HS Code ]: 2934999090

[ Summary ]:
2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%