Fast HPLC analysis of Omeprazole, 5-hydroxyomeprazole and Omeprazole sulfone in liquid culture medium using a monolithic columm for application in biotransformation studies with fungi - Borges, Keyller B.; Durán-Patrón, Rosa; Sánchez, Antonio José M.; Pupo, Mônica Tallarico; Bonato, Pierina Sueli; Collado, Isidro G. (Journal of Brazilian Chemical Society, 2011)