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Business Description
Sigma-Aldrich Corporation develops, manufactures and distributes a broad range of high-quality biochemicals and organic chemicals. These chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical and other high-technology manufacturing. The Company operates in 35 countries, offers 90,000 chemical and 30,000 equipment products and sells these products into over 150 countries. On April 14, 2004, Sigma-Aldrich acquired the stock of Ultrafine. On June 22, 2004, the Company acquired the stock of Tetrionics, Inc., a supplier of high-purity vitamin D analogs and services. On February 16, 2005, Sigma-Aldrich entered into an agreement to acquire Proligo from Degussa AG. On February 28, 2005, the Company acquired the stock of JRH, a global supplier of cell culture and sera products to the biopharmaceutical industry.

Financial Information
For the fiscal year ended 12/31/04, revenues rose 9% to $1.41 billion. Net income from continuing operations rose 22% to $232.9 million. Revenues reflect currency benefits, price increases, and acquisitions. Net income reflects lower net interest costs resulting from higher interest earned on higher cash balances.