LC-MS-MS determination of ibuprofen, 2-hydroxyibuprofen enantiomers, and carboxyibuprofen stereoisomers for application in biotransformation studies employing endophytic fungi - Borges, Keyller Bastos; Oliveira, Anderson Rodrigo Moraes de; Barth, Thiago; Jabor, Valquíria Aparecida Polizel; Pupo, Mônica Tallarico; Bonato, Pierina Sueli (Analytical and Bioanalytical Chemistry, 2011)