(also known as Endorem and ferumoxides, discontinued in 2008; resovist (also known as Cliavist (2001 to 2009); Sinerem (also known as Combidex, withdrawn in 2007; Lumirem (also known as Gastromark (1996 to 2012; Clariscan (also known as PEG-fero, Feruglose, and NC100150), development of which was discontinued due to safety concerns.