Impurities Guide on Residual Solvents
Federal Register notice: FDA is making available a final guidance for industry entitled Q3C (R8) Impurities: Guidance for Residual Solvents. The International Council for Harmonization document provides recommendations for permitted daily exposures (PDEs) for three additional residual solvents: 2-methyltetrahydrofuran, cyclopentylmethyl ether, and tert-butyl alcohol. The agency says the PDEs were developed according to the methods for establishing exposure limits included in the guidance for industry Q3C: Impurities Residual Solvents. To view the notice, click here.