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Related Experiment Video

Updated: Jun 26, 2026

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients

A Package of Established Analytical Tools to Investigate the Solid-State Alteration of Lipid-Based Excipients

Published on: August 9, 2022

Solid state evaluation of some thalidomide raw materials.

J P Carini¹, C Pavei, A P C Silva

¹Centro de Desenvolvimento Tecnológico Farmacêutico, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga 2752, Porto Alegre, RS, Brazil. julianacarini@yahoo.com.br

International Journal of Pharmaceutics

|January 24, 2009

Summary

This summary is machine-generated.

This study analyzed commercial thalidomide samples, revealing significant variations in crystalline structure and dissolution rates. These differences highlight issues with drug homogeneity and quality control for pharmaceutical production.

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Area of Science:

Pharmaceutical Sciences
Materials Science

Background:

Thalidomide exhibits polymorphism, posing challenges due to poor solubility and tablet processing difficulties.
Existing pharmacopoeial standards often lack detailed solid-state characterization requirements for drugs.

Purpose of the Study:

To characterize different commercial thalidomide samples.
To assess the homogeneity of thalidomide raw materials available in the market.
To evaluate the impact of solid-state properties on drug performance.

Main Methods:

Infrared spectroscopy
Particle size analysis
Scanning electron microscopy
X-ray diffraction
Rietveld analysis for polymorphic quantification
Intrinsic dissolution rate evaluation

Main Results:

Commercial thalidomide samples displayed significant heterogeneity.
Variations were observed in crystalline constitution, crystal habit, and polymorphic composition.
Intrinsic dissolution rates differed considerably among the analyzed samples.

Conclusions:

Marketed thalidomide raw materials lack homogeneity, impacting drug quality and consistency.
Solid-state characterization is crucial for ensuring pharmaceutical product quality.
Further research is needed to standardize thalidomide production and quality control.