the antibiotics included the natural agents gentamicin , tobramycin , sissomicin and kanamycin and the semi-synthetic compounds amikacin , netilmicin and dibekacin with some newer agents , including o-demethyl fortimicin , hapa gentamicin b and 5-epi-sissomicin , not available commercially .
C0022487
kanamycin
C0002499
amikacin