Description

3-Thiophen-2-Yl-Quinoxaline-5-Carboxylic Acid is a high-purity, advanced pharmaceutical intermediate and organic building block. This compound is valued for its unique heterocyclic structure, which serves as a critical scaffold in the development of novel active pharmaceutical ingredients (APIs) and functional materials. It is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and material science sectors for synthesizing complex molecules with targeted properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of drug candidates, particularly those targeting neurological disorders, oncology, and infectious diseases.
• Organic Light-Emitting Diode (OLED) Materials: Used in the research and development of electron-transport or host materials for display and lighting technologies due to its quinoxaline core.
• Agrochemical Research: Serves as a building block for creating novel pesticides and herbicides with specific modes of action.
• Coordination Chemistry & Catalysis: Acts as a ligand for metal complexes used in catalytic processes and sensor development.
• Polymer & Material Science: Incorporated into polymers to impart specific electronic or thermal properties for advanced material applications.
• Chemical Biology & Proteomics: Utilized as a molecular probe or tag in biochemical research to study protein interactions and cellular processes.

Basic Information

Product Name	3-Thiophen-2-Yl-Quinoxaline-5-Carboxylic Acid
CAS No.	904818-54-8
Molecular Formula	C₁₃H₈N₂O₂S
Molecular Weight	256.28 g/mol
Synonyms	3-(Thiophen-2-yl)quinoxaline-5-carboxylic acid; 3-(2-Thienyl)quinoxaline-5-carboxylic acid; Quinoxaline-5-carboxylic acid, 3-(2-thienyl)-; 904818-54-8; TQCA; 3-Thien-2-yl-quinoxaline-5-carboxylic acid; 3-(Thiophene-2-yl)quinoxaline-5-carboxylic acid
EINECS	Contact for details

Quality Control

Our 3-Thiophen-2-Yl-Quinoxaline-5-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and residual solvent analysis. We provide a detailed Certificate of Analysis (COA) with each shipment to ensure traceability and compliance with your research or production specifications.

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). This material is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere for long-term stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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