ionophoretic antibiotics

[DOSIO at ch.unito.it]

Hello,
can anyone help me in the search of a commercial source of the ionophoric
antibiotics CATIONOMYCIN, DIANEMYCIN and ETHEROMYCIN ?
Thank you very much
				Franco Dosio
University of Turin, Fac. Pharmacy
fax +39.116527695  e-mail DOSIO at silver.ch.unito.it
                          U196cfa
                          U196CFA at csivms.csi.it