Description

Ethyl Thieno[2,3-B]Pyrazine-6-Carboxylate is a high-value heterocyclic building block and advanced pharmaceutical intermediate. This compound is critical for the synthesis of complex molecules, particularly in medicinal chemistry and materials science research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing novel thienopyrazine-based scaffolds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs) targeting various therapeutic areas.
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and insecticides with unique modes of action.
• Organic Electronic Materials: Core structure for creating conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs) and photovoltaics.
• Dye & Pigment Synthesis: Intermediate for producing specialized heterocyclic dyes and colorants.
• Ligand & Catalyst Development: Used to create novel chelating ligands for catalytic systems in asymmetric synthesis.
• Academic & Contract Research: Essential reagent for exploratory chemistry and library synthesis in academic and CRO laboratories.

Basic Information

Product Name	Ethyl Thieno[2,3-B]Pyrazine-6-Carboxylate
CAS No.	59944-77-3
Molecular Formula	C9H8N2O2S
Molecular Weight	208.24 g/mol
Synonyms	Ethyl Thieno[2,3-b]pyrazine-6-carboxylate; 6-(Ethoxycarbonyl)thieno[2,3-b]pyrazine; Thieno[2,3-b]pyrazine-6-carboxylic acid ethyl ester; Ethyl 6-thieno[2,3-b]pyrazinecarboxylate; 6-Carbethoxy-thieno[2,3-b]pyrazine; ETCP; CAS 59944-77-3
EINECS	Contact for details

Quality Control

Our Ethyl Thieno[2,3-B]Pyrazine-6-Carboxylate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring GMP-grade intermediates and research-grade materials.

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). Keep the container tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Residual Solvents (GC)	Complies with ICH Q3C guidelines
Loss on Drying	≤ 0.5%

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