Original ResearchPublished 12 March 2026A case study on N-nitrosamine investigation in a marketed drug: from analytical procedure validation to risk mitigation decisionYue Zhang · Sabah Houari · Thomas Van Laethem · Priyanka Kumari · Eric Ziemons · Philippe Hubert · Cédric HubertFrontiers in Analytical Sciencedoi 10.3389/frans.2026.1772719