The molecule is an organic cation obtained by protonation of the four free amino groups of neamine; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a neamine.
[(1S,2R,3R,4S,5R)-5-azaniumyl-2-[(2R,3R,4R,5S,6R)-3-azaniumyl-6-(azaniumylmethyl)-4,5-dihydroxyoxan-2-yl]oxy-3,4-dihydroxycyclohexyl]azanium