Gadopentetate monomeglumine 92923-57-4 C14H20GdN3O10.C7H17NO5 White power; 98% MRI( magnetic resonance imaging) OTHERS: Gadopentetate Dimeglumine 86050-77-3 C14H20GdN3O10.2( C7H17NO5) White power; 98% MRI( magnetic resonance imaging) Gadopentetate monomeglumine 92923-57-4 C14H20GdN3O10.C7H17NO5 White power; 98% MRI( magnetic resonance imaging) Gadodiamide hydrate 122795-43-1 C16H26GdN5O8.H2O White crystalline powder; 98% ; USP29 MRI( magnetic resonance imaging)