Tranexamic Acid Impurity 25 (CAS 861518-79-8) is independently indexed as 4-(((4-(chloromethyl)benzoyl)oxy)methyl)benzoic acid. It is used as an analytical impurity material for chromatographic method development, impurity identification and process-related impurity studies.

Product Information

Analytical Use

The material can support retention-time comparison, chromatographic selectivity studies and LC-MS identification. Impurity numbering can vary between suppliers, so CAS number and structure are important identity controls.

Quantitative Use and Reference-Material Status

Suitability for quantitative calibration depends on the lot-specific assigned purity or content and the requirements of the analytical method. A catalog impurity material is not automatically a certified reference material.

For method development or quantitative work, review the lot-specific COA and available identity data such as HPLC, MS or NMR where applicable. If prepared solutions will be stored, solution stability should be established in the selected diluent.

See additional analytical impurity standards.

Product Documents

MSDS - Tranexamic Acid Impurity 25 (AS4097)

The Safety Data Sheet provides product identification, laboratory handling guidance, exposure controls, transport information and safety information for research use.

Certificates of Analysis (COAs) are batch-specific. Please contact us to request the COA for your product, and we will provide it by email.

Frequently Asked Questions

Why should I order by CAS as well as impurity name?

Impurity numbering can differ among catalogs; CAS and structure reduce the risk of selecting a different impurity.

Is this automatically suitable as a quantitative standard?

No. Quantitative use depends on the lot-specific purity or content assignment and the analytical procedure.

Research Use Only.