Overview
The impurity reference standard for CAS 1985-46-2 is a high-purity chemical substance used primarily in pharmaceutical quality control. It serves as a benchmark to identify and quantify impurities in active pharmaceutical ingredients (APIs) during manufacturing and regulatory testing. These standards are critical for compliance with international pharmacopeias (e.g., USP, EP, ICH guidelines). The standard is typically supplied with a Certificate of Analysis (COA) detailing its purity, analytical methods used for characterization, and storage recommendations. Its use ensures consistency in impurity profiling, aiding in batch-to-batch quality assurance and regulatory submissions.
Physical and Chemical Properties
The impurity standard for CAS 1985-46-2 is usually a white to off-white powder or crystalline solid, with solubility varying depending on the specific impurity structure. It is commonly soluble in polar organic solvents such as methanol, acetonitrile, or dimethyl sulfoxide (DMSO), which are frequently used in chromatographic analyses. Key properties include high chemical stability under recommended storage conditions (2-8°C) and compatibility with common analytical techniques like HPLC and LC-MS. The molecular weight and exact structure are proprietary to the impurity's origin, but the standard is characterized to meet stringent purity requirements (>95%).
Main Applications
This impurity standard is predominantly used in pharmaceutical development and quality control laboratories. It enables precise identification and quantification of specific impurities in APIs, ensuring compliance with regulatory limits (e.g., ICH Q3A/B guidelines). Applications extend to method validation, where the standard is used to confirm the accuracy and specificity of analytical procedures. It is also employed in stability studies to monitor impurity formation over time, supporting shelf-life determinations and packaging decisions.
Safety and Storage
Proper handling of the CAS 1985-46-2 impurity standard requires standard laboratory safety practices, including the use of gloves, goggles, and fume hoods. Though toxicity data may vary by specific impurity, treat all reference materials as potentially hazardous. Storage should adhere to supplier recommendations, typically in a tightly sealed container under refrigerated conditions (2-8°C) to prevent degradation. Desiccants are often included to mitigate moisture absorption, which could affect analytical results. Always consult the Safety Data Sheet (SDS) for compound-specific precautions.
B2B Procurement Guide
When procuring this impurity standard, prioritize suppliers with ISO 17025 accreditation or compliance with pharmacopeial standards (e.g., USP, EP). Request batch-specific COAs that include purity, chromatographic data, and storage conditions. Consider purchasing small quantities initially to verify performance in your analytical methods. Pricing varies significantly based on purity (e.g., >95% vs. >98%) and supplier reputation. Lead times can be lengthy for specialized impurities, so plan procurement aligned with project timelines.
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