Kashyap R. Wadekar

By Kashyap R. Wadekar, Mitali Bhalme, S. Srinivasa Rao, K. Vigneshwar Reddy, L. Sampath Kumar, E. Balasubrahmanyam

The public and the pharmaceutical industry are placing greater attention on impurities in drug as evidenced by the attention given to pharmaceutical impurities in books, journal articles, and national and international guidelines. The health implications of impurities can be significant because of their potential teratogenic, mutagenic, or carcinogenic effects. Controlling and monitoring impurities in APIs and finished drug products, therefore, is a crucial issue in drug development and manufacturing. 

This article was also published in our US sister publication 

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In Part II of a three-part article, the authors examine impurities from chiral molecules, polymorphic contaminants, and genotoxic impurities.

Evaluating Impurities in Drugs (Part II of III)

By Kashyap R. Wadekar, Mitali Bhalme, S. Srinivasa Rao, K. Vigneshwar Reddy, L. Sampath Kumar and E. Balasubrahmanyam

To ensure the quality of APIs and finished drug products, impurities must be monitored carefully during process development, optimization, and process changeover. The isolation, characterization, and control of impurities in pharmaceutical substances are being reviewed with greater attention based on national regulatory and international guidelines. In Part I of this article, the authors examine the different types and sources of impurities with specific examples. 

In Part I of a three-part article, the authors discuss what constitutes an impurity and the potential sources of impurities in APIs and finished drug products.