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Charles Pfizer & Company opens as a fine-chemicals business. The Company produces its first medical breakthrough product, candied santonin-a palatable antiparasitic.
First domestic production of tartaric acid and cream of tartar, vital to food and chemical industries, is launched by Pfizer.
Many of the drugs Union forces use during the Civil War are supplied by Pfizer. In 1868, Pfizer opens new corporate offices at 81 Maiden Lane in Manhattan's Wall Street district to accommodate growth experienced during the war.
Using imported concentrates of lemon and lime, Pfizer begins manufacturing citric acid, which becomes the Company's main product and the launching pad of its growth in the years to follow.
Spurred by America's westward expansion, Pfizer opens offices and a warehouse in Chicago, Illinois, its first location outside New York.
 
 
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