Description

3-Thiophenecarboxaldehyde, 5-Ethenyl-4,5-Dihydro- (9Ci) is a specialized heterocyclic aldehyde building block featuring a reactive formyl group on a partially saturated thiophene ring. This compound matters as a versatile synthon for constructing complex molecular architectures, particularly in advanced pharmaceutical and agrochemical research. It is primarily needed by R&D chemists and process development scientists in the fine chemical, pharmaceutical, and material science industries for applications in medicinal chemistry and functional material synthesis.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting central nervous system (CNS) disorders.
• Agrochemical Research: Used in the development of new generation herbicides and fungicides, leveraging the thiophene moiety for bioactivity.
• Material Science: Acts as a monomer or functionalizing agent in the production of conductive polymers and organic semiconductors for electronic applications.
• Ligand Synthesis: Employed in the preparation of novel ligands for catalysis, including asymmetric synthesis and transition metal complexes.
• Flavor & Fragrance Chemistry: Utilized as a building block for creating sulfur-containing aroma compounds with unique sensory profiles.
• Academic & Institutional Research: A valuable tool for methodological studies in organic synthesis, including cycloaddition and cross-coupling reactions.

Basic Information

Product Name	3-Thiophenecarboxaldehyde, 5-Ethenyl-4,5-Dihydro- (9Ci)
CAS No.	225217-88-9
Molecular Formula	C7H8OS
Molecular Weight	140.20 g/mol
Synonyms	5-Vinyl-4,5-dihydrothiophene-3-carboxaldehyde; 5-Ethenyl-4,5-dihydro-3-thiophenecarboxaldehyde; 4,5-Dihydro-5-vinylthiophene-3-carbaldehyde; 3-Formyl-5-vinyl-4,5-dihydrothiophene; Dihydro-5-vinylthiophene-3-carboxaldehyde
EINECS	Contact for details

Quality Control

Our 3-Thiophenecarboxaldehyde, 5-Ethenyl-4,5-Dihydro- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing purity (typically ≥95% by HPLC), physical characteristics, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended long-term storage temperature is 2-8°C. Allow the container to reach room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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