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Comparative purity of trypan blue solutions: impurity profiles and their clinical implications

Richard Packard1

  • 1From the Prince Charles Eye Unit, Windsor, United Kingdom.

Journal of Cataract and Refractive Surgery
|December 11, 2025
PubMed
Abstract

No abstract available in PubMed .

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Pharmaceutical products contain more than just the active drug; they also contain various excipients such as binders, solubilizers, stabilizers, preservatives, and other elements. In some cases, impurities or contaminants might be present. Traditionally, quality control in pharmaceuticals has primarily focused on the analysis of the active drug, often overlooking the impact of these additional components. The recent issue with heparin contamination by over-sulfated chondroitin sulfate, a...
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