Sterling Products

Sterling Drug
Sterling-Winthrop

Industry	Health care
Fate	Acquired by Bayer AG
Successor	over the counter drugs-Bayer AG and Sanofi SA (ethical pharmaceuticals)
Founded	1901
Defunct	1994
Headquarters	90 Park Avenue New York, NY 10016
Products	Lehn & Fink, Bayer Aspirin, Phillips'
Parent	Eastman Kodak (until 1994)

Sterling Drug was an American global pharmaceutical company, known as Sterling-Winthrop, Inc. after the merger with Winthrop-Stearns Inc. (which resulted from the merger of Winthrop Chemical Company Inc. and Frederick Stearns & Company). It was formerly known as Sterling Winthrop Pharmaceuticals, whose primary product lines included diagnostic imaging agents, hormonal products, cardiovascular products, analgesics, antihistamines and muscle relaxants.

Chemical compounds produced by this company were often known by their manufacturing code which consisted of the abbreviation WIN (for Winthrop) followed by a number. For example, WIN 18,320 was nalidixic acid, the first quinolone antibiotic.

The Company was established in 1901 (then called Neuralgyline Co.) in Wheeling, West Virginia, by Albert H. Diebold and William E. Weiss, a pharmacist. At the end of World War I in 1918, Sterling purchased the US assets of a German company now known as Bayer AG for US $5.3 million. This purchase was directed under the Alien Property Custodian Act. In 1919, Sterling sold its dye division for $2.5 million to the Grasselli Chemical Company (based in Linden, New Jersey), which employed many former Bayer personnel.

A 1920 agreement between Sterling and Bayer AG granted Sterling the rights to the "Bayer" brand to sell aspirin. In return, Bayer was allowed back into its former Latin American markets. In 1922, 50% of Sterling's new holding company, Winthrop, was given to the German Bayer company, while the American Bayer retained the rights to use Bayer brand. In 1923 Sterling purchased a 25% interest in The Centaur Company, manufacturer of Charles Henry Fletcher's, Fletcher's Castoria

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