PETRESKA STANOEVA, J.; STEFOVA, E.; CVETANOSKA, M.; BOGDANOV, J. Establishing mass spectral fragmentation patterns for characterization of 1,2 -unsaturated pyrrolizidine alkaloids and N-oxides in Boraginaceae species from Macedonia using LC-ESI-MS/MS. Macedonian Journal of Chemistry and Chemical Engineering, [S. l.], v. 41, n. 1, p. 99–110, 2022. DOI: 10.20450/mjcce.2022.2491. Disponível em: https://mjcce.org.mk/index.php/MJCCE/article/view/2491. Acesso em: 29 sep. 2022.