In the intricate world of chemical synthesis, the quality and precise specifications of starting materials and intermediates are paramount to achieving desired outcomes. For 4-[5-(4-Pentyloxyphenyl)isoxazol-3-yl]benzoic acid (CAS: 179162-55-1), understanding these critical parameters is key for its successful application in fields ranging from pharmaceuticals to advanced materials. This compound, a vital intermediate, is recognized for its high purity and well-defined physicochemical properties, ensuring reliability in complex synthetic processes. Sourcing from a reputable manufacturer in China often guarantees adherence to these rigorous standards.

The primary specification for 4-[5-(4-Pentyloxyphenyl)isoxazol-3-yl]benzoic acid is its purity, consistently reported as u226598.5% when analyzed by High-Performance Liquid Chromatography (HPLC). This high level of purity is crucial for preventing side reactions and ensuring the integrity of the final products, particularly in pharmaceutical applications where even trace impurities can have significant consequences. The compound's appearance is also a key visual indicator of its quality, typically described as a white to off-white crystalline powder.

Further essential specifications include the analysis of residual solvents, which are kept within strict limits, generally u22640.1%, compliant with ICH Q3C guidelines. This is vital for pharmaceutical intermediates to minimize potential toxicity. Water content, determined by Karl Fischer titration, is also controlled to u22640.5%, preventing unwanted hydrolysis or interference in moisture-sensitive reactions. Heavy metal content is maintained at u226410 ppm, adhering to USP methods, which is another critical factor for pharmaceutical applications.

The physicochemical properties of 4-[5-(4-Pentyloxyphenyl)isoxazol-3-yl]benzoic acid further dictate its handling and application. Its molecular weight is 351.4 g/mol, and its molecular formula is C21H21NO4. While insoluble in water, it exhibits good solubility in common organic solvents like DMSO, DMF, and THF, making it amenable to a wide range of reaction conditions. The compound's melting point, often reported around 200-205u00b0C with decomposition observed, indicates its thermal stability up to a certain point, a factor to consider during process design. Its thermogravimetric analysis (TGA) further confirms its robustness, showing minimal weight loss at temperatures below 220u00b0C.

For manufacturers and researchers looking to buy this critical intermediate, verifying these specifications with the supplier is a standard practice. Understanding these quality parameters ensures that the 4-[5-(4-Pentyloxyphenyl)isoxazol-3-yl]benzoic acid procured meets the demanding requirements of advanced chemical synthesis, supporting innovation in diverse scientific and industrial fields. Exploring purchase options from established chemical synthesis suppliers in China can provide access to these high-quality materials with competitive pricing.