4'-Deoxy-6'-N-methylamikacin 71398-14-6 Antibiotic BBK 311 BB-K311 D-Streptamine, O-3-amino-3-deoxy-alpha-D-glucopyranosyl-(1-6)-O-(4,6-dideoxy-6-(methylamino)-alpha-D-xylo-hexopyranosyl-(1-4)-N(sup 1)-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy-, (S)-