Description

2,3-Dihydrothieno[3,4-B][1,4]Dioxine-2-Carboxylic Acid is a high-value heterocyclic carboxylic acid derivative, serving as a critical building block in advanced organic synthesis. Its unique fused thiophene-dioxine structure makes it an essential precursor for the development of novel functional materials and pharmaceuticals. This compound is primarily sought by research institutions and industrial R&D departments focused on organic electronics, polymer chemistry, and medicinal chemistry.

Application

• Key Monomer for Conductive Polymers: A fundamental precursor in the synthesis of Poly(3,4-ethylenedioxythiophene) (PEDOT) and its derivatives, which are cornerstone materials for transparent conductive films, antistatic coatings, and organic electrochemical transistors.
• Pharmaceutical Intermediate: Used in the research and development of active pharmaceutical ingredients (APIs), particularly for drugs targeting the central nervous system or requiring specific electronic properties for bioactivity.
• Organic Semiconductor Development: Serves as a starting material for creating novel small-molecule and polymeric semiconductors used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Electrochromic Material Synthesis: Employed in the production of polymers that change color in response to an electrical stimulus, useful for smart windows, displays, and mirrors.
• Sensor Technology: A building block for creating sensitive layers in chemical and biological sensors due to the tunable electronic properties of its polymerized forms.
• Academic & Industrial Research: A versatile reagent for exploring new chemical spaces in heterocyclic and macromolecular chemistry, facilitating innovation in material science.

Basic Information

Item	Details
Product Name	2,3-Dihydrothieno[3,4-B][1,4]Dioxine-2-Carboxylic Acid
CAS No.	955373-67-8
Molecular Formula	C7H6O4S
Molecular Weight	186.19 g/mol
Synonyms	2,3-Dihydrothieno[3,4-b][1,4]dioxine-2-carboxylic acid; 2-Carboxy-2,3-dihydrothieno[3,4-b][1,4]dioxine; EDOT-COOH; 2,3-Dihydrothieno[3,4-b]-1,4-dioxin-2-carboxylic acid; 3,4-Ethylenedioxythiophene-2-carboxylic acid; 2,3-Dihydro-[1,4]dioxino[2,3-c]thiophene-2-carboxylic acid; Precursor for PEDOT-COOH
EINECS	Contact for details

Quality Control

Our 2,3-Dihydrothieno[3,4-B][1,4]Dioxine-2-Carboxylic Acid is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, critical for sensitive electronic and pharmaceutical applications. We provide comprehensive Certificates of Analysis (COA) with each batch, detailing purity, identity, and impurity profiles. Our quality management system is designed to meet the stringent requirements of research and development, and we can support custom synthesis to meet specific project specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption, which can affect purity and reactivity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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