LAKE SUCCESS, N.Y., Oct. 21, 2009 (GLOBE NEWSWIRE) -- Aceto Corporation (Nasdaq:ACET), a global leader in the sourcing, quality assurance, regulatory support, marketing and distribution of chemically derived pharmaceuticals, biopharmaceuticals, specialty chemicals and crop protection products, today announced that Chairman and CEO Leonard S. Schwartz will be leaving the Company on November 20, 2009 after 40 years of service.