Description

6,7-Dihydro-4H-Thieno[3,2-C]Pyran-2-Carboxylic Acid is a high-value heterocyclic building block and key synthetic intermediate. This compound matters for its crucial role in the development of novel active pharmaceutical ingredients (APIs) and advanced organic materials. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Research: Used as a building block for developing new active ingredients in crop protection and pest management products.
• Material Science: Serves as a monomer or functional component in the research of advanced polymers and organic electronic materials.
• Chemical Synthesis: A versatile synthon for constructing complex fused-ring systems containing thiophene and pyran motifs in academic and industrial R&D.
• Ligand & Catalyst Development: Employed in the design and synthesis of novel chelating ligands and organocatalysts for asymmetric synthesis.

Basic Information

Product Name	6,7-Dihydro-4H-Thieno[3,2-C]Pyran-2-Carboxylic Acid
CAS No.	933747-41-2
Molecular Formula	C8H8O3S
Molecular Weight	184.21 g/mol
Synonyms	4H-Thieno[3,2-c]pyran-2-carboxylic acid, 6,7-dihydro-; 6,7-Dihydro-4H-thieno[3,2-c]pyran-2-carboxylic acid; Thieno[3,2-c]pyran-2-carboxylic acid, 6,7-dihydro-4H-; 2-Carboxy-6,7-dihydro-4H-thieno[3,2-c]pyran; 6,7-Dihydro-4H-thieno[3,2-c]pyran-2-carboxylate; 933747-41-2 (CAS Registry Number)
EINECS	Contact for details

Quality Control

Our 6,7-Dihydro-4H-Thieno[3,2-C]Pyran-2-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and development applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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 a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.