51846-98-1 Antibiotic JI 20B Antibiotic JI-20B BRN 1409637 D-Streptamine, O-3-deoxy-4-C-methyl-3-(methylamino)-beta-L-arabinopyranosyl-(1-6)-O-(2,6-diamino-2,6,7-trideoxy-L-glycero-alpha-D-gluco-heptopyranosyl-(1 -4))-2-deoxy- JI 20B