5,6-dihydro-4H-cyclopenta[b]thiophene-2- carboxylic acid

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Names

[ CAS No. ]:
40133-06-0

[ Name ]:
5,6-dihydro-4H-cyclopenta[b]thiophene-2- carboxylic acid

[Synonym ]:
4H,5H,6H-cyclopenta[b]thiophene-2-carboxylic acid
4,5,6-trihydrocyclopenta[2,1-b]thiophene-2-carboxylic acid

Chemical & Physical Properties

[ Density]:
1.395g/cm3

[ Boiling Point ]:
347.7ºC at 760mmHg

[ Melting Point ]:
200-202ºC

[ Molecular Formula ]:
C8H8O2S

[ Molecular Weight ]:
168.21300

[ Flash Point ]:
164.1ºC

[ Exact Mass ]:
168.02500

[ PSA ]:
65.54000

[ LogP ]:
1.93500

[ Index of Refraction ]:
1.645

Safety Information

[ Hazard Codes ]:
Xi: Irritant;

[ HS Code ]:
2934999090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Methyl 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylate
  • Cyclopentanone
  • 1-CYCLOPENTENE-1-CARBOXALDEHYDE, 2-CHLORO-

DownStream

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%