USE OF AN ION EXCHANGE MEMBRANE TO REMOVE IMPURITIES FROM CELL -BINDING AGENT CYTOTOXIC AGENT CONJUGATES

摘要

The invention provides processes for preparing purified cell- binding agent cytotoxic agent conjugates comprising subjecting a mixture comprising a cell- binding agent cytotoxic agent conjugate and one or more impurities to an ion exchange chromatography membrane to remove at least a portion of the impurities from the mixture, thereby providing a purified cell- binding agent cytotoxic agent conjugate.