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A QbD approach for optimizing the lyophilization parameters of cyclophosphamide monohydrate.

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Titel: A QbD approach for optimizing the lyophilization parameters of cyclophosphamide monohydrate.
Autoren: Ahammad, Shaik Riyaz1 (AUTHOR), Narayanasamy, Damodharan1 (AUTHOR) damodhan@srmist.edu.in
Quelle: Drug Development & Industrial Pharmacy. Jun2025, Vol. 51 Issue 6, p566-576. 11p.
Schlagwörter: *COMMERCIAL product testing, *PRODUCT quality, X-ray diffraction, THERMAL analysis, CYCLOPHOSPHAMIDE, FREEZE-drying, GENERIC drugs
Abstract: Purpose: Cyclophosphamide, an active pharmaceutical ingredient (API), is accessible in monohydrate form and esteemed for its remarkable stability. Maintaining this monohydrate form post-lyophilization is essential for product stability. This research aims to optimize essential lyophilization parameters for an effective and robust lyophilization cycle using a Quality by Design (QbD) methodology. Methods: Initially, thermal analysis is performed to evaluate the thermal qualities of the product. The research defines critical process parameters (CPPs) and important quality attributes (CQAs), employing a systematic Quality by Design (QbD) methodology to establish the design space in accordance with the required Quality Target Product Profile (QTPP). The lyophilization parameters being examined are primary drying temperature, primary drying duration, and primary drying vacuum. Meticulous analysis of the results identifies an optimum formulation. Results: The test product successfully preserves water content between 6 and 7%, hence confirming the existence of the monohydrate form, as verified by X-ray diffraction (XRD) examination. Furthermore, the product demonstrates minimal concentrations of TBA and ACN, maintains an intact cake structure, and achieves a rapid reconstitution time of less than 30 s. Conclusion: The implementation of Quality by Design (QbD) concepts to enhance lyophilization parameters offers significant insights for developing generic pharmaceutical lyophilization formulations. Ultimately, a reliable freeze-drying technique is developed and then requires validation on industrial-scale lyophilizers for commercial applications. [ABSTRACT FROM AUTHOR]
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Abstract:Purpose: Cyclophosphamide, an active pharmaceutical ingredient (API), is accessible in monohydrate form and esteemed for its remarkable stability. Maintaining this monohydrate form post-lyophilization is essential for product stability. This research aims to optimize essential lyophilization parameters for an effective and robust lyophilization cycle using a Quality by Design (QbD) methodology. Methods: Initially, thermal analysis is performed to evaluate the thermal qualities of the product. The research defines critical process parameters (CPPs) and important quality attributes (CQAs), employing a systematic Quality by Design (QbD) methodology to establish the design space in accordance with the required Quality Target Product Profile (QTPP). The lyophilization parameters being examined are primary drying temperature, primary drying duration, and primary drying vacuum. Meticulous analysis of the results identifies an optimum formulation. Results: The test product successfully preserves water content between 6 and 7%, hence confirming the existence of the monohydrate form, as verified by X-ray diffraction (XRD) examination. Furthermore, the product demonstrates minimal concentrations of TBA and ACN, maintains an intact cake structure, and achieves a rapid reconstitution time of less than 30 s. Conclusion: The implementation of Quality by Design (QbD) concepts to enhance lyophilization parameters offers significant insights for developing generic pharmaceutical lyophilization formulations. Ultimately, a reliable freeze-drying technique is developed and then requires validation on industrial-scale lyophilizers for commercial applications. [ABSTRACT FROM AUTHOR]
ISSN:03639045
DOI:10.1080/03639045.2025.2487615