Description

2,7-Dimethyl-4-Oxo-4,7-Dihydrothieno[2,3-B]Pyridine-5-Carboxylic Acid is a high-purity heterocyclic carboxylic acid building block of significant interest in advanced organic synthesis. Its fused thienopyridine core structure makes it a critical intermediate for the development of novel active pharmaceutical ingredients (APIs) and functional materials. This compound is primarily sought by pharmaceutical R&D and fine chemical synthesis teams for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, or metabolic diseases.
• Agrochemical Synthesis: Used in the synthesis of novel herbicides, fungicides, or insecticides, leveraging its heterocyclic scaffold for bioactivity.
• Material Science Research: Acts as a precursor for organic semiconductors, dyes, or photoactive materials due to its conjugated thienopyridine system.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies in heterocyclic chemistry and scaffold diversification.
• Custom Synthesis Building Block: Provided to fine chemical manufacturers for the bespoke production of complex molecules for clients in life sciences.

Basic Information

Product Name	2,7-Dimethyl-4-Oxo-4,7-Dihydrothieno[2,3-B]Pyridine-5-Carboxylic Acid
CAS No.	55503-21-4
Molecular Formula	C11H9NO3S
Molecular Weight	235.26 g/mol
Synonyms	5-Carboxy-2,7-dimethyl-4,7-dihydro-4-oxothieno[2,3-b]pyridine; 2,7-Dimethyl-4-oxo-4H,7H-thieno[2,3-b]pyridine-5-carboxylic acid; Thieno[2,3-b]pyridine-5-carboxylic acid, 4,7-dihydro-2,7-dimethyl-4-oxo-; 4,7-Dihydro-2,7-dimethyl-4-oxothieno[2,3-b]pyridine-5-carboxylic Acid
EINECS	Contact for details

Quality Control

Our 2,7-Dimethyl-4-Oxo-4,7-Dihydrothieno[2,3-B]Pyridine-5-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, related substances, and residual solvents. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliability for your critical synthesis workflows.

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 strong oxidizing agents and bases. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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