“…MTX was analyzed by HPLC with UV or fluorescence detection (Merás et al, 2002;Kuo et al, 2003), LC-MS/MS (Turci et al, 2002;Koufopantelis et al, 2009) and capillary electrophoreses (CE)-UV (Mrestani and Neubert, 1998;Flores et al, 2003Flores et al, , 2005Kuo et al, 2003Kuo et al, , 2006. VBL was analyzed by CE , LC-MS/MS (Gupta et al, 2005;Kosjek et al, 2013) and LC-UV (Tsai, 2001;Rodrigues et al, 2009). DTIC was analyzed by LC-UV (Benvenuto et al, 1981;Beitz et al, 1999;Safgren et al, 2001;Liu et al, 2008), LC-MS/MS (Liu et al, 2008), CE (Haque and Stewart, 1999) and voltammetry (Radi et al, 2014).…”