IMPLEMENTATION OF A UNIFIED UPLC PLATFORM FOR THE ANALYSIS OF INPROCESS SAMPLES ACROSS MULTIPLE PROCESS STEPS

Significance of the topic

In modern pharmaceutical manufacturing, the ability to monitor active ingredient synthesis in near real time enhances process control, reduces batch failures, and accelerates development timelines. Integrating a single ultraperformance liquid chromatography (UPLC) platform across research, development, and production bridges analytical gaps and creates a comprehensive process analytics framework.

Objectives and overview

This study demonstrates the implementation of a unified UPLC system for both at‐line and online analysis of in‐process samples across multiple manufacturing steps of an active pharmaceutical ingredient (API). The goals are to:

• Apply the same analytical methods from R&D through pilot and manufacturing scales
• Enable near real‐time reaction monitoring and process validation
• Establish data continuity between laboratories and production facilities

Methodology and instrumentation

Methods initially developed in R&D laboratories were directly transferred to manufacturing without modification. Key features include:

• Automated method development using a four‐column ACQUITY UPLC Column Manager and proprietary optimization software
• At‐line sampling via a Process Sample Manager (PSM) bench‐top unit for reaction method development
• Online monitoring through a PATROL UPLC Process Analyzer integrated with dissolving reactors in pilot and production environments
• Data acquisition and threshold management using Empower software for potency and impurity limits

Main results and discussion

Online and off‐line UPLC analyses showed comparable sensitivity and precision. Limits of detection (LOD) and quantitation (LOQ) for starting materials and final API were below 35 ng/mL and 105 ng/mL, respectively, with correlation coefficients above 0.999. Reaction profiles collected in pilot trials generated reproducible chromatographic maps, enabling batch‐to‐batch fingerprinting and early detection of deviations. Cleaning validation using UPLC reduced solvent consumption and idle time compared to traditional off‐line methods.

Benefits and practical applications of the method

The unified UPLC platform offers several advantages:

• Seamless analytical method transfer from R&D to manufacturing
• Accelerated decision making through near real‐time data
• Reduced sample preparation and solvent usage
• Improved process validation and cleaning verification
• Comprehensive historical data access for regulatory compliance

Future trends and possibilities

Emerging opportunities include integration of chemometric modeling for advanced process control, coupling UPLC data with machine learning algorithms to predict process outcomes, and extending the platform to continuous manufacturing. Further work may focus on miniaturized flow‐through sensors and fully autonomous PAT architectures.

Conclusion

Deploying a single UPLC platform across the entire lifecycle of API production—from R&D through pilot scale to full manufacturing—streamlines analytical workflows, enhances data integrity, and supports robust process control. The demonstrated approach delivers consistent, high‐resolution insights that drive quality by design and operational efficiency.

Used instrumentation

• PATROL UPLC Process Analyzer (Waters)
• ACQUITY UPLC Column Manager with four‐column capacity
• Process Sample Manager (PSM) bench‐top unit
• Empower software for data processing and control
• Bench‐top and pilot‐plant reactor sampling interfaces