6'-DN-Mfb 6'-Di-N-methylfortimicin B 71657-33-5 L-chiro-Inositol, 4-amino-3-O-(2-amino-2,3,4,6,7-pentadeoxy-6-(dimethylamino)-beta-L-lyxo-heptopyranosyl)-1,4-dideoxy-6-O-methyl-1-(methylamino)-