For professionals in the chemical and pharmaceutical industries, a thorough understanding of product specifications is fundamental to making informed purchasing decisions. This is especially true when procuring key intermediates like 4-(Methylsulfonyl)benzyl Chloride (CAS: 40517-43-9). As a versatile building block, its precise characteristics directly impact the success of downstream synthesis and the quality of the final product.

Let's examine the essential specifications of 4-(Methylsulfonyl)benzyl Chloride. Firstly, its identity is unequivocally established by the CAS number 40517-43-9. The molecular formula is C8H9ClO2S, which corresponds to a molecular weight of approximately 204.67 grams per mole. These fundamental identifiers are crucial for accurate ordering and regulatory compliance.

The physical form and appearance are also important for initial assessment. Typically, 4-(Methylsulfonyl)benzyl Chloride is supplied as a white solid. This physical state is consistent with its melting point, which is generally reported in the range of 78-80°C. This melting point range is a key indicator of purity, as a broader or lower range can suggest the presence of impurities. When you purchase this chemical, ensuring it meets this specification is a good first step in quality verification.

Purity is perhaps the most critical specification for pharmaceutical intermediates. Our commitment as a leading manufacturer from China ensures that 4-(Methylsulfonyl)benzyl Chloride is supplied with a minimum purity of 97%+. This high level of purity is essential for achieving predictable reaction outcomes, maximizing yields, and minimizing the formation of unwanted byproducts in complex synthetic routes. For researchers and procurement managers, specifying and verifying this purity level is non-negotiable.

Other relevant properties may include density (around 1.287 g/cm³) and refractive index (around 1.537), though these are often secondary to purity and physical form for typical buyers. Stability is also a key consideration; the compound is generally stable under normal temperature and pressure conditions, but proper storage, often recommended under refrigeration, is advised to maintain its integrity over time.

When you are ready to buy 4-(Methylsulfonyl)benzyl Chloride, engaging with a reputable supplier that provides detailed Certificates of Analysis (CoA) is highly recommended. A CoA will confirm the purity, identity, and other critical specifications for the specific batch you receive. This documentation is vital for quality assurance and traceability within your manufacturing or research processes. We, as a dedicated manufacturer, are committed to providing comprehensive documentation to support your needs.

In conclusion, understanding the specifications of 4-(Methylsulfonyl)benzyl Chloride, from its CAS number and molecular weight to its physical appearance and purity, is vital for successful procurement. Prioritizing suppliers who adhere to strict quality controls and provide transparent documentation ensures you receive a reliable intermediate for your critical applications.