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CS-W001157 4
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Thieno[3,2-b]thiophene-2-carboxylic acid

  • CAS No. 1723-27-9

  • Cat. No. CS-0155512
  • Purity≥98%
  • MDL No.MFCD00115174

*For research and further manufacturing use only, not for direct human use.

Thieno[3,2-b]thiophene-2-carboxylic acid|CS-0155512

Structure of 1723-27-9

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General Information

  • CAS No. 1723-27-9
  • Cat. No. CS-0155512
  • Purity ≥98%
  • MDL No. MFCD00115174
  • Storage 4°C, stored under nitrogen
  • Shipping Room temperature in continental US; may vary elsewhere.
  • Molecular Formula C₇H₄O₂S₂
  • Molecular Weight 184.24
  • Synonym(s) thieno[3,2-b]thiophene-5-carboxylic acid
  • SMILES C1=CSC2=C1SC(=C2)C(=O)O

Description

Thieno[3,2-b]thiophene-2-carboxylic acid features a rigid, electron-rich fused heterocyclic core that enhances charge transport properties. This functionalized scaffold integrates seamlessly into conjugated polymers and small-molecule semiconductors, offering improved film morphology and stability in organic electronic devices.

Application

Thieno[3,2-b]thiophene-2-carboxylic acid serves as a versatile building block in the synthesis of functionalized heterocycles and conjugated materials. Its fused thiophene core provides enhanced planarity and electron-rich character, enabling efficient coupling reactions via the carboxylic acid group. The molecule exhibits good bench stability and compatibility with standard amide formation, esterification, and Suzuki-type cross-coupling protocols, facilitating integration into advanced organic electronic and medicinal chemistry applications.

Synthesis

  • Route1
    • Ethyl thieno[3,2-b]thiophene-2-carboxylate|CS-0188221
      201004-08-2
    • ~96%
    • In-stock
      Thieno[3,2-b]thiophene-2-carboxylic acid|CS-0155512
      1723-27-9

    References

    • Kawabata, Kohsuke; Takeguchi, Masaki; Goto, Hiromasa Macromolecules, 2013 , vol. 46, # 6 p. 2078 - 2091
  • Route2

    References

    • Journal of the Chemical Society - Perkin Transactions 1, , # 22 p. 3465 - 3470
  • Route3
    • null|null
      98778-43-9
    • ~%
    • In-stock
      Thieno[3,2-b]thiophene-2-carboxylic acid|CS-0155512
      1723-27-9

    References

    • Journal of medicinal chemistry, , vol. 28, # 12 p. 1896 - 1903

Safety Information

Download SDS
GHS Pictogram :
GHS No : GHS07
Signal Word : Warning
UN#: N/A
Class : N/A
Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Computational Chemistry Data

  • TPSA   37.3
  • LogP   2.661
  • H_Acceptors   3
  • H_Donors   1
  • Rotatable_Bonds   1

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