Continuous flow Aza-Michael reaction for preparing the fast-acting synthetic opioid drug Remifentanil. Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 59, 2023. DOI: 10.1590/s2175-97902023e22764 . Disponível em: https://www.periodicos.usp.br/bjps/article/view/213470.. Acesso em: 8 may. 2024.