“…Till now, many fluorescence derivatization reagents have been used for the biogenic amines derivatization, such as fluorescein isothiocyanate (FITC) [1], 5-(4,6-dichloro-s-triazin-2-ylamino) fluorescein (DTAF) [25], o-phthalaldehyde (OPA) [18,19,21,22], naphthalene-2,3-dicarboxaldehyde (NDA) [26,27,34,35] and 3-(2-furoyl)-quinoline-2-carboxaldehyde (FQ) [2]. However, there are some disadvantages of these derivatization reagents.…”