Description

4-Ethylsulfonylbenzaldehyde is a versatile aromatic aldehyde derivative featuring a sulfonyl functional group. This compound is a critical high-purity intermediate in advanced organic synthesis, valued for its reactivity and role in constructing complex molecular architectures. It is primarily used by pharmaceutical and agrochemical research and development teams, as well as by manufacturers of specialty chemicals and advanced materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds targeting specific receptors or enzymes.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and plant growth regulators.
• Organic Light-Emitting Diodes (OLEDs): Serves as a precursor for electron-transport materials or host materials in display and lighting technologies.
• Ligand and Catalyst Development: Employed in the creation of novel ligands for transition metal catalysis and asymmetric synthesis.
• Polymer Modification: Acts as a functional monomer or cross-linking agent for producing specialty polymers with enhanced properties.
• Dyestuff and Pigment Intermediate: Utilized in the synthesis of high-performance dyes and organic pigments.

Basic Information

Product Name	4-Ethylsulfonylbenzaldehyde
CAS No.	50899-03-1
Molecular Formula	C9H10O3S
Molecular Weight	198.24 g/mol
Synonyms	p-(Ethylsulfonyl)benzaldehyde; 4-(Ethylsulfonyl)benzaldehyde; Benzaldehyde, 4-(ethylsulfonyl)-; 4-ESBA; 4-ESBAL; 4-Ethanesulfonylbenzaldehyde; 1-(Ethylsulfonyl)-4-formylbenzene
EINECS	Contact for details

Quality Control

Our 4-Ethylsulfonylbenzaldehyde is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	108 - 112 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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