(2S,3R,4S,5S,6R)-4-amino-2-(((1S,2S,3R,4S,6R)-4,6-diamino-3-(((2S,3R)-3-amino-6-(aminomethyl)-3,4-dihydro-2H-pyran-2-yl)oxy)-2-hydroxycyclohexyl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,5-diol;Tobramycin Impurity RRT 1.04; O-3-Amino-3-deoxy-?-D-glucopyranosyl-(1?6)-O-[2,6-diamino-2,3,4,6-tetradeoxy-?-D-glycero-hex-4-enopyranosyl-(1?4)]-2-deoxy-D-streptamine; (2S,3R,4S,5S,6R)-4-amino-2-(((1S,2S,3R,4S,6R)-4,6-diamino-3-(((2S,3R)-3-amino-6-(aminomethyl)-3,4-dihydro-2H-pyran-2-yl)oxy)-2-hydroxycyclohexyl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,5-diol