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Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

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Published on: October 26, 2015

Development of high-purity pyrethrins certified reference material.

Hui-Yeon Lee¹, Youngjik Park¹, Kyungjin Lee¹

¹Department of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea.

|November 21, 2025

Summary

This summary is machine-generated.

A stable, high-purity pyrethrins certified reference material (CRM) was developed for pesticide analysis. This new CRM ensures reliable pyrethrin residue quantification and enhances analytical quality.

Keywords:

Argon-purged package Homogeneity assessment ISO 33405 Mass balance Pesticide residue analysis Stability assessment Uncertainty estimation

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Area of Science:

Analytical Chemistry
Environmental Science

Background:

Certified Reference Materials (CRMs) are crucial for accurate pesticide residue analysis.
Existing CRMs may lack the required purity or stability for comprehensive pyrethrin analysis.

Purpose of the Study:

To develop a stable and high-purity pyrethrins CRM.
To validate the CRM's suitability for reliable pesticide residue analysis.

Main Methods:

Chromatographic purification of pyrethrum extract.
Argon-purged packaging for enhanced stability.
Mass balance and external calibration for purity determination.
ISO-guided approach for CRM property evaluation.

Main Results:

Development of a pyrethrins CRM with high purity (total pyrethrins: 98.6 ± 0.9%).
Quantification of six individual pyrethrin compounds with certified purity values and uncertainties.
Demonstrated excellent homogeneity, stability, and metrological traceability of the candidate CRM.

Conclusions:

Successfully developed a stable, high-purity pyrethrins CRM.
The CRM significantly improves the reliability and quality of pyrethrin residue analysis.
This CRM is a valuable tool for regulatory compliance and environmental monitoring.