Description

2,2''-Bithiophene-5,5''-Dicarboxylic Acid is a high-purity, functionalized bithiophene derivative serving as a critical building block in advanced material synthesis. This compound is valued for its conjugated structure and dual carboxylic acid functional groups, which enable precise molecular engineering and polymerization. It is primarily sought by R&D and production teams in the organic electronics, polymer chemistry, and pharmaceutical intermediates sectors for developing novel materials with tailored electronic and optical properties.

Application

• Organic Semiconductor Precursor: A key monomer for synthesizing conjugated polymers and small molecules used in Organic Field-Effect Transistors (OFETs) and Organic Photovoltaics (OPVs).
• Electrochromic Material Synthesis: Used in the development of polymers that change color with applied voltage for smart windows and displays.
• Pharmaceutical Intermediate: Serves as a sophisticated scaffold in medicinal chemistry for the research and development of new active pharmaceutical ingredients (APIs).
• Coordination Chemistry Ligand: The dicarboxylic acid groups act as chelating sites for metal ions, useful in creating metal-organic frameworks (MOFs) or catalysts.
• Chemical Sensor Development: Incorporated into polymers and surfaces to create sensitive layers for detecting specific analytes.
• Specialty Dye and Pigment Intermediate: Used in the synthesis of high-performance, color-fast dyes and pigments.

Basic Information

Item	Detail
Product Name	2,2''-Bithiophene-5,5''-Dicarboxylic Acid
CAS No.	3515-34-2
Molecular Formula	C10H6O4S2
Molecular Weight	254.28 g/mol
Synonyms	5,5'-Dicarboxy-2,2'-bithiophene; [2,2'-Bithiophene]-5,5'-dicarboxylic acid; 2,2'-Bithiophene-5,5'-dicarboxylic acid; 5,5'-Bithiophenedicarboxylic Acid; 2,2'-Dithiophene-5,5'-dicarboxylic acid; Thieno[3,2-b]thiophene-2,6-dicarboxylic acid (isomer); DTBDC; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Every batch of 2,2''-Bithiophene-5,5''-Dicarboxylic Acid is produced and tested under strict quality management protocols to ensure high purity and batch-to-batch consistency. Our standard quality assurance includes comprehensive analytical testing via HPLC, NMR, and elemental analysis. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, ensure containers are sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.