Description

Thieno[2,3-b]pyrazine-6-carboxylic acid, 7-methoxy- is a high-purity heterocyclic carboxylic acid building block of significant interest in advanced organic synthesis. This compound matters as a critical intermediate for constructing complex molecular architectures, particularly in pharmaceutical research and development. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging its unique heterocyclic core for bioactivity.
• Organic Electronic Materials: Acts as a precursor for conjugated molecules and polymers used in organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs).
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and metal-organic frameworks (MOFs).
• Chemical Biology Probes: Utilized to create fluorescent tags or molecular probes for studying biological processes.
• Academic & Contract Research: Essential for fundamental research in heterocyclic and medicinal chemistry at universities and CROs (Contract Research Organizations).

Basic Information

Product Name	Thieno[2,3-b]pyrazine-6-carboxylic acid, 7-methoxy-
CAS No.	521948-54-9
Molecular Formula	C8H6N2O3S
Molecular Weight	210.21 g/mol
Synonyms	7-Methoxythieno[2,3-b]pyrazine-6-carboxylic acid; 7-Methoxy-6-thieno[2,3-b]pyrazinecarboxylic acid; 6-Carboxy-7-methoxythieno[2,3-b]pyrazine; 7-Methoxy-thieno[2,3-b]pyrazine-6-carboxylic acid; Thienopyrazine-6-carboxylic acid derivative; CAS 521948-54-9
EINECS	Contact for details

Quality Control

Our Thieno[2,3-b]pyrazine-6-carboxylic acid, 7-methoxy- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical quality attributes. Our standard grade meets the high-purity requirements for research and development, with specifications tailored to support cGMP (current Good Manufacturing Practice) workflows for pharmaceutical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation by atmospheric moisture. For long-term storage, consider using desiccants or storing under an inert atmosphere.

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)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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