Simultaneous determination of paracetamol, dextromethorphan, chlorpheniramine, pseudoephedrine and major impurities of paracetamol and pseudoephedrine by using capillary electrophoresis. Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 58, 2022. DOI: 10.1590/s2175-97902022e19836 . Disponível em: https://periodicos.usp.br/bjps/article/view/204237.. Acesso em: 10 jun. 2024.