66220-21-1 78164-00-8 Antibiotic OS 4742 A(sub 1) BRN 5724539 Benz(a)anthracene-1,7,12(2H)-trione, 9-(2,6-dideoxy-4-O-((2S-(2-alpha,5-beta(2S*,6R*),6-beta))-5-((5,6-dihydro-6-methyl-5-oxo-2H-pyran-2-yl)oxy)tetrahydro-6-methyl-2H-pyran-2-yl)-beta-D-arabino-hexopyranosyl)-3-((5-((5,6-dihydro-6-methyl-5-oxo-2H-pyran-2-yl)oxy)tetrahydro-6-methyl-2H-pyran-2-yl)oxy)-3,4,4a,12b-tetrahydro-4a,8,12b-trihydroxy-3-methyl-, (3R-(3-alpha(2S*,5S*(2R*,6S*)6S*),4a-alpha,12a-alpha))- OS-4742 A1 P 1894B Vineomycin A(sub 1) Vineomycin A1