Displaying 23 results of Melphalan Impurities Melphalan is an alkylating agent used in chemotherapy for the treatment of multiple myeloma and other cancers. During the synthesis and storage of melphalan drug substance, impurities may be formed which can affect the quality, safety, and efficacy of the drug. These impurities include related substances, residual solvents, and degradation products. Therefore, identification, characterization, and control of melphalan impurities are essential to ensure the safety and efficacy of the drug product.