CRANFORD, N.J. and LOMBARD, Ill., June 20, 2025 (GLOBE NEWSWIRE) -- Enzon Pharmaceuticals, Inc. (OTCQX: ENZN) (“Enzon” or the “Company”) and Viskase Companies, Inc. (OTC Pink Limited: VKSC) (“Viskase”) announced that they have entered into a definitive …