Adapting high-performance liquid chromatography (HPLC) methods to the capillary scale opens new possibilities for pharmaceutical analysis and sustainability. This paper, featuring a collaboration with the University of Pavia and Axcend, examines real-world method conversions that preserve performance while minimizing waste. Case studies include detection of a polar impurity in pediatric ibuprofen mini-tablets using a micro-HPLC-UV method, and a USP <621> guided adaptation for hydrochlorothiazide demonstrating over 99% solvent reduction. Practical guidelines, expected trade-offs, and data from both academic and regulated environments will offer a roadmap to adapting validated pharmaceutical monographs to the capillary scale without the need for revalidation.
Nano-liquid chromatography-high-resolution tandem mass spectrometry (nano-LC-HRMS/MS) reveals saliva protein shifts before and after multiple sclerosis therapy.
Max Besenhard explains how hybrid mechanistic and machine learning models can make HPLC method development quicker, more robust and ready for autonomous digital twins.