Synonyms: 1,6-Dioxaspiro[4.5]decane-7-butyricacid, 9-hydroxy-b-methoxy-a,g,2,8-tetramethyl-2-[tetrahydro-5-methyl-5-[tetrahydro-3-methyl-5-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl]-2-furyl]-2-furyl]-(8CI); 1,6-Dioxaspiro[4.5]decane, monensin deriv.; Monensin B