Description General description Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards. Atorvastatin Related Compound H is an impurity of Atorvastatin, an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, an enzyme that catalyzes the conversion of HMG-CoA to mevalonate in cholesterol biosynthesis pathway.[1] Application Atorvastatin may be used as a pharmaceutical reference standard for the quantification of the analyte in pharmaceutical formulations[1][2] using capillary electrophoresis technique[1] and reversed-phase high-performance liquid chromatography technique.[2] These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements. Analysis Note These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available. Other Notes This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis. Footnote To see an example of a Certificate of Analysis for this material enter LRAB7554 in the Documents slot below. This is an example certificate only and may not be the lot that you receive.