Description

4-Formyl-3-Methoxybenzonitrile (CAS NO 21962-45-8) is a versatile aromatic aldehyde and nitrile derivative that serves as a critical building block in advanced organic synthesis. Its bifunctional structure, featuring both a formyl and a nitrile group on a methoxy-substituted benzene ring, makes it a valuable precursor for constructing complex heterocycles and fine chemicals. This high-purity intermediate is essential for research and development chemists in the pharmaceutical, agrochemical, and material science industries seeking to develop novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules containing benzofuran, quinoline, or other fused heterocyclic systems.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its reactive sites to create targeted bioactive compounds.
• Material Science & Organic Electronics: Serves as a monomer or building block for conjugated polymers, organic semiconductors, and liquid crystal materials.
• Dye & Pigment Manufacturing: Intermediate for synthesizing specialized dyes, pigments, and optical brighteners due to its electron-withdrawing nitrile and aldehyde groups.
• Ligand & Catalyst Development: Useful for creating chelating ligands in coordination chemistry and catalysis research.
• Academic & Industrial R&D: Employed in methodological chemistry research for novel reaction development and as a standard in analytical testing.

Basic Information

Product Name	4-Formyl-3-Methoxybenzonitrile
CAS No.	21962-45-8
Molecular Formula	C9H7NO2
Molecular Weight	161.16 g/mol
Synonyms	3-Methoxy-4-cyanobenzaldehyde; 4-Cyano-2-methoxybenzaldehyde; 2-Methoxy-4-formylbenzonitrile; 4-Formyl-3-methoxybenzonitrile; 4-Cyano-2-methoxybenzaldehyde; 3-Methoxy-4-formylbenzonitrile; 2-Methoxy-4-cyanobenzaldehyde; 4-Aldehydo-3-methoxybenzonitrile
EINECS	Contact for details

Quality Control

Our 4-Formyl-3-Methoxybenzonitrile is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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 in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is light-sensitive and easily oxidized; for long-term storage, consider keeping under an inert atmosphere such as nitrogen or argon to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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