1,6-Dioxaspiro[4.5]decane-7-butyric acid, 2-[5-ethyltetrahydro-5-[tetrahydro-3-methyl-5-[tetrahydro-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyl-2H-pyran-2-yl]-2-furyl]-2-furyl]-9-hydroxy-.beta.-methoxy-.alpha.,.gamma.,2,8-tetramethyl-, monosodium salt 22373-78-0 Monensin sodium Monensin sodium salt Monensin, monosodium salt NSC343257 Rumensin