Deacetyl Iodixanol;5-[Acetyl[3-[[3,5-bis[(2,3-dihydroxypropyl)carbamoyl]-2,4,6-triiodophenyl]amino]-2-hydroxypropyl]amino]-N,N′-bis(2,3-dihydroxypropyl)-2,4,6-triiodobenzene-1,3-dicarboxamide;Iodixanol impurity C;5-[Acetyl[3-[[3,5-bis[[(2,3-dihydroxypropyl)aMino]carbonyl]-2,4,6-triiodophenyl]aMino]-2-hydroxypropyl]aMino]-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxaMide;Desacetyl Iodixanol;5-[[3-[N-acetyl-3,5-bis(2,3-dihydroxypropylcarbamoyl)-2,4,6-triiodoanilino]-2-hydroxypropyl]amino]-1-N,3-N-bis(2,3-dihydroxypropyl)-2,4,6-triiodobenzene-1,3-dicarboxamide;Iodixanol EP impurity C;Iodixanol Impurity 3(Iodixanol EP Impurity C)