Description

Thieno[2,3-B]Pyridine, 4-Ethyl- (8Ci,9Ci) CAS NO 28988-17-2 is a specialized heterocyclic organic compound featuring a fused thiophene and pyridine ring system with an ethyl substituent. This unique molecular architecture makes it a high-value intermediate for advanced chemical synthesis, particularly in the development of novel pharmacologically active molecules. It is primarily sought after by pharmaceutical R&D and agrochemical sectors for constructing complex target structures.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of potential drug candidates, especially for central nervous system (CNS) and anti-infective agents.
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and insecticides due to its bioactive scaffold.
• Material Science Precursor: Serves as a starting material for creating organic semiconductors, ligands for catalysis, and specialty polymers.
• Academic & Contract Research: Essential for medicinal chemistry programs and structure-activity relationship (SAR) studies in university and CRO laboratories.
• Dye & Pigment Synthesis: Utilized as a precursor for developing heterocyclic dyes with specific light-absorption properties.

Basic Information

Item	Details
Product Name	Thieno[2,3-B]Pyridine, 4-Ethyl- (8Ci,9Ci)
CAS No.	28988-17-2
Molecular Formula	C9H9NS
Molecular Weight	163.24 g/mol
Synonyms	4-Ethylthieno[2,3-b]pyridine; 4-Ethylthieno[2,3-b]pyridine; 4-Ethyl-thieno[2,3-b]pyridine; Thieno[2,3-b]pyridine, 4-ethyl-; 28988-17-2; 4-Ethylthieno(2,3-b)pyridine; 4-Ethyl-thieno[2,3-b]pyridin
EINECS	Contact for details

Quality Control

Our production of Thieno[2,3-B]Pyridine, 4-Ethyl- adheres to stringent internal quality protocols. Each batch is characterized and tested to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay (HPLC), identity (IR, NMR), and impurity profiles are provided and available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Purity (HPLC, Area%)	≥ 98.0%
Melting Point	Contact for details
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.