Description_x000D_ General description_x000D_ 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. L-Arginine is a dibasic, semi-essential amino acid. It acts as a precursor for creatinine and is a natural constituent of most of the dietary proteins. It also plays a key role in many physiological processes such as tissue repair and reproduction._x000D_ Application_x000D_ 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._x000D_ Biochem/physiol Actions_x000D_ Substrate of nitric oxide synthase, which is converted to citrulline and nitric oxide (NO). Induces insulin release by a nitric oxide-dependent mechanism._x000D_ Analysis Note_x000D_ These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available._x000D_ Other Notes_x000D_ 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._x000D_ Footnote_x000D_ To see an example of a Certificate of Analysis for this material enter LRAA7157 in the slot below. This is an example certificate only and may not be the lot that you receive.