mass spectra were determined by applying time-of-flight 252cf pd mass spectrometry to eleven aminoglycoside antibiotics , namely : neomycin , kanamycin , paromomycin , tobramycin , apramycin , streptomycin , dihydrostreptomycin , amikacin , netilmicin , sisomicin and gentamicins .
C0022487
kanamycin
C0002499
amikacin