eng Science and Education Publishing World Journal of Analytical Chemistry 2333-1283 2026-08-18 11 1 15 19 10.12691/wjac-11-1-2 WJAC20261112 article Vijayalakshmi Atla akmpawar@andhrauniversity.edu.in, vijji.chirality@gmail.com 1 Dr A. Krishnamanjari Pawar akmpawar@andhrauniversity.edu.in, vijji.chirality@gmail.com 1 Bothsa Guru Naidu 2 K. Laxmi Chandana 2 K. Sri Padma 2 Pharmaceutical Analysis and Quality assurance division, Andhra University College of pharmaceutical sciences, Andhra University, Visakhapatnam, India College of Science and Technology, Andhra University, Visakhapatnam, India Lercanidipine is a synthetic antihypertensive drug belongs to the dihydropyridines chemical class. Antihypertensive drugs often require long term usage for controlling blood pressure and to prevent cardiovascular risk. Drugs that possess secondary amine functional group are prone to nitrosation and form nitrosamine drug substance related impurities (NDSRI). Nitrosamine impurities are known to cause carcinogenicity in humans and required to be controlled in pharmaceuticals. The present work describes rapid 5.0 minute liquid chromatography mass spectrometry method for the detection and quantitation of potential genotoxic Nitrosamine impurity N-nitroso-des-methyl-lercanidipine impurity D (NNLD) in the Lercanidipine active pharmaceutical ingredient. The developed method validated as per ICH Q2(R2) guideline and shown excellent selectivity, linearity (r2 0.9957), accuracy (average % recovery 90 to 111 %) and precision (%RSD < 8%). The Limit of Detection (LOD) was 0.17 ppm and Limit of quantification was established at 0.5 ppm relative to 5mg per mL Lercanidipine test concentration. https://pubs.sciepub.com/wjac/11/1/2/wjac-11-1-2.pdf Lercanidipine NDSRI LC-MS-MS Validation