1-Naphthacenecarboxylic acid, 1,2,3,4,6,11-hexahydro-6,11-dioxo-2-ethyl-4-((4-O-(2,6-dideoxy-alpha-L-lyxo-hexopyranosyl)-3-(dimethylamino)-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy)-2,5,7-trihydroxy-, methyl ester (1R-(1-alpha,2-beta,4-beta))- 64431-69-2 Antibiotic MA 144S1 MA 144 S1 MA144 S1