Description

3-Thiophenecarboxaldehyde, 4-Ethyl- (9Ci) is a specialized heterocyclic aldehyde building block of significant interest in advanced organic synthesis. This compound matters for its role as a key precursor in the development of novel pharmaceuticals, agrochemicals, and functional materials, where its unique thiophene core imparts valuable electronic and structural properties. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for candidates targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the thiophene moiety for bioactivity.
• Material Science & Organic Electronics: Acts as a monomer or precursor for conductive polymers, organic semiconductors, and non-linear optical (NLO) materials due to the electron-rich thiophene ring.
• Ligand & Catalyst Development: Employed in the preparation of novel ligands for transition metal catalysis, facilitating asymmetric synthesis and cross-coupling reactions.
• Flavor & Fragrance Chemistry: Utilized as an intermediate for creating complex sulfur-containing aroma molecules, though typically in research quantities.
• Chemical Research: A versatile reagent for academic and industrial research in heterocyclic chemistry, medicinal chemistry, and methodology development.

Basic Information

Product Name	3-Thiophenecarboxaldehyde, 4-Ethyl- (9Ci)
CAS No.	197724-05-3
Molecular Formula	C7H8OS
Molecular Weight	140.20 g/mol
Synonyms	4-Ethyl-3-thiophenecarboxaldehyde; 4-Ethylthiophene-3-carbaldehyde; 3-Formyl-4-ethylthiophene; 4-Ethyl-3-formylthiophene; 4-Ethyl-3-thienylcarboxaldehyde; 4-Ethyl-3-thiophenecarbaldehyde; 3-Thiophenecarboxaldehyde, 4-ethyl-
EINECS	Contact for details

Quality Control

Every batch of 3-Thiophenecarboxaldehyde, 4-Ethyl- is produced and tested under strict quality management protocols to ensure consistency and reliability for your synthetic workflows. Our products undergo rigorous quality testing to ensure compliance with industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its sensitivity, the container should be kept under an inert atmosphere (e.g., nitrogen) after opening to prevent oxidation and maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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