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Atomfair Thieno(3,4-b)thiophene-2-carboxylic acid C7H4O2S2 CAS 14630-08-1

Thieno[3,4-b]thiophene-2-carboxylic acid (CAS No. 14630-08-1) is a high-purity heterocyclic carboxylic acid with the molecular formula C7H4O2S2. This specialized organic compound features a fused thienothiophene core, offering unique electronic and structural properties for advanced research applications. Our product is rigorously tested to ensure ≥98% purity (HPLC) and is supplied as a fine crystalline powder with excellent batch-to-batch consistency. The material is carefully packaged under inert atmosphere to maintain stability and is ideal for use in organic electronics, conjugated polymer synthesis, and as a building block for novel semiconducting materials. Each shipment includes comprehensive analytical documentation including1H NMR,13C NMR, and mass spectrometry…

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Description

Thieno[3,4-b]thiophene-2-carboxylic acid (CAS No. 14630-08-1) is a high-purity heterocyclic carboxylic acid with the molecular formula C7H4O2S2. This specialized organic compound features a fused thienothiophene core, offering unique electronic and structural properties for advanced research applications. Our product is rigorously tested to ensure ≥98% purity (HPLC) and is supplied as a fine crystalline powder with excellent batch-to-batch consistency. The material is carefully packaged under inert atmosphere to maintain stability and is ideal for use in organic electronics, conjugated polymer synthesis, and as a building block for novel semiconducting materials. Each shipment includes comprehensive analytical documentation including 1H NMR, 13C NMR, and mass spectrometry data.

Properties

  • CAS Number: 14630-08-1
  • Complexity: 183
  • IUPAC Name: thieno[2,3-c]thiophene-2-carboxylic acid
  • InChI: InChI=1S/C7H4O2S2/c8-7(9)5-1-4-2-10-3-6(4)11-5/h1-3H,(H,8,9)
  • InChI Key: IZBPOIZFVYLFEP-UHFFFAOYSA-N
  • Exact Mass: 183.96527171
  • Molecular Formula: C7H4O2S2
  • Molecular Weight: 184.2
  • SMILES: C1=C(SC2=CSC=C21)C(=O)O
  • Topological: 93.8
  • Monoisotopic Mass: 183.96527171
  • Synonyms: Thieno[3,4-b]thiophene-2-carboxylic acid, 14630-08-1, Thieno(3,4-b)thiophene-2-carboxylic acid, 886-093-6, thieno[2,3-c]thiophene-2-carboxylic acid, MFCD18451799, SCHEMBL12668178, PAA63008, AKOS006373707, Thieno[3,4-b]thiophene-2-carboxylicacid, DA-44220, EN300-299321, Z1198727192

Application

This compound serves as a key precursor in the synthesis of conjugated polymers for organic photovoltaics and field-effect transistors. Researchers utilize its carboxylic acid functionality for esterification or amidation reactions to create novel π-conjugated systems. The thienothiophene moiety contributes to enhanced charge carrier mobility in organic electronic materials. It’s particularly valuable in developing low-bandgap polymers for solar cell applications.

Safety and Hazards

GHS Hazard Statements

  • H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]
  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation]
  • H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

  • P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

  • Acute Tox. 4 (100%)
  • Acute Tox. 4 (100%)
  • Skin Irrit. 2 (100%)
  • Eye Irrit. 2A (100%)
  • Acute Tox. 4 (100%)
  • STOT SE 3 (100%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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