Monsanto to sales and distribution facilities in 51 countries. In 2005, it finalized the purchase of Seminis Inc, a leading global vegetable and fruit seed company, for $1.4 billion. This made it the world's largest conventional seed company. In 1999 Monsanto sold off NutraSweet Co. In December of the same year, Monsanto agreed to merge with Pharmacia & Upjohn, in a deal valuing the transaction at $27 billion. The agricultural division became a wholly owned subsidiary of the "new" Pharmacia; Monsanto's medical research division, which included products such as Celebrex. In 2000: Pharmacia spun off its agro-biotech subsidiary into a new
Monsanto in the Texas City Disaster. In 1949, Monsanto acquired American Viscose from Courtaulds. In 1954, Monsanto partnered with German chemical giant Bayer to form Mobay and market polyurethanes in the United States. Monsanto began manufacturing DDT in 1944, along with some 15 other companies. This insecticide was critical to the fight against malaria-transmitting mosquitoes. Due to DDT's toxicity, it was banned in the United States in 1972. In 1977, Monsanto stopped producing PCBs; Congress banned PCB production two years later. In the mid‑1960s, William Standish Knowles and his team invented a way to selectively synthesize enantiomers via asymmetric hydrogenation. This