Description

Thieno[2,3-b]pyridine-5-carboxylic acid, 6,7-dihydro-4-hydroxy-6-oxo-, ethyl ester is a high-purity, heterocyclic organic compound that serves as a critical synthetic intermediate. Its fused thienopyridine core structure makes it a valuable building block for advanced pharmaceutical research and fine chemical synthesis. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and metabolic diseases.
• Agrochemical Research: Used in the development of new active ingredients for crop protection products, leveraging its heterocyclic scaffold.
• Material Science: Serves as a monomer or functional additive in the research of advanced polymers and organic electronic materials.
• Chemical Synthesis: A versatile building block for creating complex fused-ring systems and functionalized heterocycles in academic and industrial laboratories.
• Bioconjugate Chemistry: Potential use in developing diagnostic agents or targeted therapeutics due to its modifiable carboxylic ester group.

Basic Information

Product Name	Thieno[2,3-b]pyridine-5-carboxylic acid, 6,7-dihydro-4-hydroxy-6-oxo-, ethyl ester
CAS No.	99429-68-2
Molecular Formula	C11H11NO4S
Molecular Weight	253.27 g/mol
Synonyms	Ethyl 4-hydroxy-6-oxo-6,7-dihydrothieno[2,3-b]pyridine-5-carboxylate; 4-Hydroxy-6-oxo-6,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acid ethyl ester; 6,7-Dihydro-4-hydroxy-6-oxothieno[2,3-b]pyridine-5-carboxylic acid ethyl ester; Thieno[2,3-b]pyridine-5-carboxylic acid, 6,7-dihydro-4-hydroxy-6-oxo-, ethyl ester; CAS 99429-68-2
EINECS	Contact for details

Quality Control

Every batch of our Thieno[2,3-b]pyridine-5-carboxylic acid, 6,7-dihydro-4-hydroxy-6-oxo-, ethyl ester is produced and tested under strict quality management systems. We provide comprehensive analytical data to ensure the material meets your specific research or development requirements. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is supplied with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider inert atmosphere conditions 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)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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