For professionals in the pharmaceutical and fine chemical industries, sourcing critical intermediates like 4-Biphenylacetic Acid (CAS 5728-52-9) is a fundamental aspect of product development and manufacturing. This compound, primarily used as an intermediate for anti-inflammatory and analgesic drugs, requires careful consideration regarding quality, reliability, and cost.

When looking to purchase 4-Biphenylacetic Acid, buyers should prioritize several key attributes. Firstly, purity is paramount. The product is typically specified with a minimum purity of 99% or higher, often confirmed by HPLC analysis. This high purity is essential to avoid unwanted side reactions and ensure the efficacy and safety of the final pharmaceutical product. Reputable suppliers, such as NINGBO INNO PHARMCHEM CO.,LTD., will readily provide Certificates of Analysis (COA) detailing the product's specifications and testing results.

Secondly, certifications and adherence to quality standards are crucial indicators of a supplier's commitment to quality. While the provided text mentions ISO 9001:2005 certification for some suppliers, it's important for buyers to inquire about current certifications and manufacturing practices. Understanding the supplier's quality management system provides confidence in the consistency of the product. The ability to request samples before placing bulk orders is also a standard practice that allows buyers to verify product quality firsthand.

The market price for 4-Biphenylacetic Acid can vary, typically ranging from US$10.00 to US$100.00 per kilogram, depending on order volume and supplier. Buyers should compare offers from multiple verified suppliers to secure the best value. Beyond the unit price, consider factors such as minimum order quantities (MOQ), lead times for delivery, and the supplier's experience in handling international shipments. Understanding the typical buy process, including payment terms and shipping options (express, air, or sea freight), is also vital for a smooth procurement experience.

Reliable suppliers not only offer quality products but also provide excellent customer support. This includes clear communication regarding product availability, order status, and any technical inquiries. For instance, inquiries about customization options for packaging or specific grades of the chemical can often be accommodated by experienced manufacturers. Building a strong relationship with a dependable supplier can streamline procurement and support long-term production goals, ensuring a steady supply of this important pharmaceutical intermediate.