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PHR2078 Supelco

Risedronate Impurity C

Pharmaceutical Secondary Standard; Certified Reference Material

Synonym: 1-Hydroxy-2-(pyridin-4-yl)ethylidene)bis(phosphonic acid) sodium salt

  • CAS Number 105462-25-7 (free acid)

  • Empirical Formula (Hill Notation) C7H11NO7P2 · xNa+

  • Molecular Weight 283.11 (free acid basis)



Related Categories Analytical Standards, Analytical/Chromatography, P-S, Pharmaceutical Secondary Standards, Pharmacopeia & Metrological Institutes Standards More...
grade   certified reference material
  pharmaceutical secondary standard
packaging   pkg of 50 mg


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

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.


To see an example of a Certificate of Analysis for this material enter LRAB8928 in the Documents slot below. This is an example certificate only and may not be the lot that you receive.

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Safety Information

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Certificate of Analysis (COA)

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