For procurement professionals and research scientists in the chemical and pharmaceutical industries, understanding the precise specifications of raw materials is fundamental. Ellagic Acid, identified by CAS 476-66-4, is no exception. When looking to buy this vital compound, the assay and purity are two of the most critical factors determining its suitability for specific applications. This article sheds light on why these metrics matter and how reputable manufacturers ensure quality.

The assay of Ellagic Acid typically refers to the percentage of the target compound present in the final product. For pharmaceutical intermediates and high-value ingredients, an assay of 90% minimum (≥90% min) is common, but higher purities are often sought for more sensitive applications. A higher assay generally translates to fewer impurities, which is crucial in pharmaceutical synthesis to avoid unwanted side reactions or the introduction of contaminants into the final drug product. Similarly, in cosmetic formulations, higher purity ensures better performance and reduced risk of skin irritation.

Manufacturers employ rigorous analytical methods, such as High-Performance Liquid Chromatography (HPLC), to determine the assay and identify impurities. When you engage with an Ellagic Acid manufacturer, requesting their Certificate of Analysis (COA) is standard practice. The COA will detail the assay results, alongside other specifications like moisture content, ash content, and heavy metal limits. This documentation provides the assurance needed when making a purchasing decision.

Sourcing Ellagic Acid from a reliable supplier in China can offer competitive advantages, including attractive pricing. However, it is imperative to select suppliers who are transparent about their quality control processes. A well-established manufacturer will not only provide a competitive price but also guarantee the purity and assay of their product. This commitment to quality is what differentiates a reliable partner from a casual vendor.

For B2B buyers, understanding the link between assay, purity, and application is key. If your research involves sensitive biological assays or complex chemical synthesis, investing in higher purity Ellagic Acid may be more cost-effective in the long run by preventing batch failures and rework. Always discuss your specific application needs with your potential manufacturer to ensure you are selecting the most appropriate grade. When seeking to purchase Ellagic Acid, prioritize suppliers who can clearly demonstrate their commitment to quality through detailed specifications and verifiable analytical data.