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Related Experiment Video

Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

D Fompeydie1, P Levillain

  • 1Laboratoire de Chimie Analytique, UER des Sciences Pharmaceutiques et Biologiques, 4, avenue de l'Obervatoire, 75270 Paris Cedex 06, France.

Talanta
|December 1, 1984
PubMed
Summary
This summary is machine-generated.

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Analysis of commercial eosin revealed significant impurities. Issues with hydration, inorganic content, and xanthene dye composition complicate its use as a pharmaceutical ingredient.

Area of Science:

  • Analytical Chemistry
  • Pharmaceutical Science

Context:

  • Eosin is a widely used dye with potential pharmaceutical applications.
  • Quality control of pharmaceutical ingredients is critical for drug safety and efficacy.

Purpose:

  • To assess the purity and composition of commercial eosin samples.
  • To identify potential challenges in using eosin as a pharmaceutical agent.

Summary:

  • Eight commercial eosin samples were analyzed for purity.
  • Key issues identified include variable hydration, inorganic contaminants, and complex xanthene moiety composition, with up to eight different dyes present.
  • These factors pose significant challenges for its pharmaceutical application.

Impact:

  • Highlights the need for stringent quality control in sourcing pharmaceutical-grade dyes.

Related Experiment Videos

Last Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

  • Suggests that further purification or alternative sourcing may be required for reliable pharmaceutical use of eosin.
  • Informs researchers and manufacturers about the inherent variability and potential impurities in commercial eosin.