34291-02-6 Ambutyrosin A Ambuyrosin A Butirosin A Butyrosin A D-Streptamine, O-2,6-diamino-2,6-dideoxy-alpha-D-glucopyranosyl-(1-4)-O-(beta-D-xylofuranosyl-(1-5))-N(sup 1)-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy-