A Review On Techniques For Estimation Of Nitrosamine Impurities In Antidiabetic Drugs Pioglitazones And Glifizones, Metformin. Journal of Pharmaceutical Negative Results, [S. l.], p. 1866–1877, 2022. DOI: 10.47750/pnr.2022.13.S10.215. Disponível em: https://pnrjournal.com/index.php/home/article/view/8853.. Acesso em: 24 jun. 2026.