Description

2-Thiophenecarboxaldehyde, 4-Ethynyl-3-Methyl- (9Ci) is a specialized heterocyclic building block featuring both aldehyde and ethynyl functional groups on a thiophene core. This unique molecular architecture makes it a valuable intermediate for synthesizing complex organic molecules, particularly in advanced material science and pharmaceutical research. It is essential for researchers and manufacturers developing novel conjugated polymers, organic semiconductors, and active pharmaceutical ingredients (APIs) where precise molecular structure is critical.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, especially in areas targeting central nervous system (CNS) disorders and oncology.
• Organic Electronic Materials: Serves as a precursor for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Agrochemical Research: Used in the development of new active ingredients for crop protection with potential novel modes of action.
• Ligand Synthesis: The aldehyde and ethynyl groups allow for the creation of complex ligands for catalysis and metal-organic frameworks (MOFs).
• Chemical Biology Probes: Employed in the synthesis of molecular probes for studying biological processes due to its ability to undergo click chemistry reactions via the ethynyl group.
• Material Science Research: A critical monomer for creating thiophene-based polymers with tailored optoelectronic properties.

Basic Information

Product Name	2-Thiophenecarboxaldehyde, 4-Ethynyl-3-Methyl- (9Ci)
CAS No.	108408-34-0
Molecular Formula	C8H6OS
Molecular Weight	150.20 g/mol
Synonyms	4-Ethynyl-3-methyl-2-thiophenecarboxaldehyde; 3-Methyl-4-ethynylthiophene-2-carbaldehyde; 4-Ethynyl-3-methylthiophene-2-carboxaldehyde; 2-Formyl-3-methyl-4-ethynylthiophene; 4-Ethynyl-3-methyl-2-thiophenecarbaldehyde; 3-Methyl-4-ethynyl-2-thiophenecarboxaldehyde
EINECS	Contact for details

Quality Control

Our 2-Thiophenecarboxaldehyde, 4-Ethynyl-3-Methyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our commitment to cGMP principles and ISO-aligned processes guarantees a reliable supply of high-purity material for your critical R&D and scale-up activities.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. Due to its sensitivity to oxidation and light, prolonged exposure to air or light should be avoided. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Light yellow to yellow crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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