9,3",4"-Triacyl ester of the antibiotic SF-837 M.sub.1 substance
9-(.omega.-Heteroarylamino-alkylamino)-erythromycins and salts t
9-Azariboflavin and pharmaceutical composition containing same
9-Desacetyl-9-ethylen oxide daunorubicin, process for its manufa
9-Dihydro-11,12-ketal derivatives of erythromycin A and epi-eryt
9.beta.-D-Arabinofuranosylpurine nucleotides and method of use