For professionals in the chemical and pharmaceutical industries, understanding the properties and applications of key intermediates is crucial for efficient procurement and successful synthesis. 3-Ethoxy-4-methoxybenzaldehyde, identified by its CAS number 1131-52-8, is one such compound. This aromatic aldehyde is valued for its specific chemical structure and its utility as a building block in various sophisticated organic synthesis pathways, most notably in pharmaceutical manufacturing.

Understanding the Chemical Profile
3-Ethoxy-4-methoxybenzaldehyde is characterized by its appearance as white to yellow crystals. With a molecular weight of 180.201 g/mol and a melting point around 51°C, it is a stable solid under standard conditions. Its solubility in common organic solvents like methanol makes it amenable to a wide range of reaction conditions. The compound's structure features an aldehyde group, an ethoxy group, and a methoxy group attached to a benzene ring, providing multiple points for chemical modification and reaction. This structural versatility is what makes it so valuable in complex synthesis.

Key Applications and Synthetic Utility
The primary application for 3-Ethoxy-4-methoxybenzaldehyde lies in its role as a pharmaceutical intermediate. It is a critical component in the synthesis of Apremilast, a widely used therapeutic for inflammatory conditions. Furthermore, it is employed in the preparation of PDE4 inhibitors, which are subjects of intense research for treating diseases ranging from respiratory ailments to neurological disorders. The compound also finds use in creating berberine analogues and in other areas of organic synthesis where a functionalized aromatic aldehyde is required. Its consistent purity, typically above 99%, ensures predictable outcomes in sensitive synthetic processes.

Procuring 3-Ethoxy-4-methoxybenzaldehyde: What Buyers Need to Know
When looking to buy 3-Ethoxy-4-methoxybenzaldehyde, buyers should focus on several key aspects. Firstly, product quality and purity are paramount; always seek suppliers who provide detailed Certificates of Analysis (CoA) confirming specifications such as assay, loss on drying, and impurity profiles. Secondly, supply chain reliability is essential, especially for pharmaceutical manufacturing where disruptions can be costly. Partnering with established manufacturers, ideally those with robust production capacities and efficient logistics, is advisable. Finally, competitive pricing, particularly for bulk orders, should be considered alongside the overall value proposition offered by the supplier, including technical support and customer service. Manufacturers in China are often a primary source, offering significant advantages in cost and scale.

Synthesis and Handling Recommendations
The synthesis of 3-Ethoxy-4-methoxybenzaldehyde typically involves the ethoxylation of isovanillin. Standard handling procedures for fine chemicals should be followed, including storing the compound in a cool, dry place, away from incompatible materials, and ensuring containers are tightly closed to maintain its quality and prevent degradation, especially considering its sensitivity to air. By understanding these details, chemical buyers can make informed decisions when sourcing this important intermediate.