Description

3-Thiophenecarboxylicacid,4-Ethyl-(9Ci) is a high-purity, functionalized heterocyclic building block of significant interest in advanced organic synthesis. This compound matters as a versatile intermediate for constructing complex molecular architectures, particularly in the development of pharmaceuticals and agrochemicals. 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 anti-infective agents.
• Agrochemical Active Ingredient Development: Used in the research and production of new-generation herbicides, fungicides, and insecticides, leveraging the thiophene moiety's bioactivity.
• Organic Electronic Materials: Acts as a precursor for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), field-effect transistors (OFETs), and solar cells.
• Ligand Synthesis for Catalysis: Employed to create specialized ligands for transition metal catalysts used in cross-coupling and other asymmetric synthesis reactions.
• Chemical Research & Development: A valuable tool for medicinal and synthetic chemists exploring structure-activity relationships (SAR) and novel heterocyclic chemistry.
• Dye and Pigment Manufacturing: Functions as an intermediate in the synthesis of specialized dyes and pigments with unique optical properties.

Basic Information

Product Name	3-Thiophenecarboxylicacid,4-Ethyl-(9Ci)
CAS No.	334918-15-9
Molecular Formula	C7H8O2S
Molecular Weight	156.20 g/mol
Synonyms	4-Ethyl-3-thiophenecarboxylic acid; 4-Ethylthiophene-3-carboxylic acid; 3-Carboxy-4-ethylthiophene; 4-Ethyl-3-thiophene carboxylic acid; 4-Ethyl-thiophene-3-carboxylic acid; 3-Thiophenecarboxylic acid, 4-ethyl-; 334918-15-9 (CAS)
EINECS	Contact for details

Quality Control

Our 3-Thiophenecarboxylicacid,4-Ethyl-(9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical quality parameters. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 frameworks.

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 away from strong oxidizing agents, strong bases, and heat sources. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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