The online marketplace has revolutionized the way businesses procure chemical compounds, offering unprecedented access to a global network of manufacturers and suppliers. For professionals seeking specialized intermediates like the 2,4(1H,3H)-Pyrimidinedione derivative (CAS 130634-04-7), understanding the critical specifications to verify when buying online is essential for ensuring product quality and project success.

The first and most crucial specification is Purity. When you intend to buy CAS 130634-04-7, always look for a guaranteed minimum purity level. For pharmaceutical intermediates, this often means ≥99%. Suppliers should provide a detailed Certificate of Analysis (CoA) that includes the method used for purity determination (e.g., HPLC, GC) and the actual results. A clear and verifiable CoA from the manufacturer is a strong indicator of product integrity.

Next, consider the Appearance. For 2,4(1H,3H)-Pyrimidinedione derivatives, a 'white powder' is a typical description. While seemingly simple, confirming this helps in a preliminary visual check upon receipt of the material. Deviations from the expected appearance could suggest contamination or degradation.

The CAS Number (130634-04-7) is the universal identifier and should always be clearly stated by the supplier. Ensure this matches your requirements precisely. Cross-referencing the CAS number with reputable chemical databases can confirm the compound's identity and basic properties.

Molecular Formula (C15H19N3O5S) and Molecular Weight (353.40) are also important for verification. These details, often found on the CoA or product specification sheet, confirm that the chemical structure corresponds to your needs. They are fundamental for any stoichiometric calculations in synthesis or formulation.

When purchasing from a supplier in China, it is beneficial to inquire about available pack sizes and their corresponding price points. Common sizes might range from grams for R&D to kilograms for pilot or commercial production. Understanding the pricing structure for different quantities will help you optimize your purchasing budget. Don't hesitate to request a detailed quotation for your specific needs.

Beyond these core specifications, consider the supplier's reputation and customer service. Look for vendors who are responsive to inquiries, provide clear shipping information, and have a clear return or quality discrepancy policy. When you purchase from an established manufacturer, you gain the advantage of their expertise and support, which can be invaluable when dealing with complex chemical sourcing.

In summary, effectively buying Pyrimidinedione derivatives online requires diligent attention to key specifications. By verifying purity, appearance, CAS number, molecular data, and understanding pricing and packaging options from reputable suppliers, you can confidently source the high-quality intermediates needed for your pharmaceutical and chemical projects.