Gentamicin is not natively fluorescent, but it
could be derivatized in order to participate in the PO-CL detection.
Based on its chemical structure, derivatization of gentamicin
has been carried out with o-phthaladehyde (OPA) [22], dansyl
chloride [23], fluorescamine [24], 9-fluorenylmethyl chloroformate,
(FMOC-CL) [25] and 1-fluoro-2,4-dinitrobenzene
(FDNB)