36889-15-3 43169-50-2 Betamicin sulfate Betamicin sulfate [USAN] D-Streptamine, O-6-amino-6-deoxy-alpha-D-glucopyranosyl-(1-4)-O-(3-deoxy-4-C-methyl-3-(methylamino)-beta-L-arabinopyranosyl-(1-6))-2-deoxy-, sulfate (salt) (9CI) D-Streptamine, O-6-amino-6-deoxy-alpha-D-glucopyranosyl-(1-