Displaying 25 results of Iohexol Impurities Iohexol is a radiopaque contrast agent used for diagnostic purposes in medical imaging. Impurities in iohexol can affect the quality and safety of the imaging procedure. Common impurities in iohexol include residual solvents, degradation products, and other organic and inorganic impurities. Strict quality control measures are necessary to ensure the purity and efficacy of iohexol for medical use.