FRANKFURT, Germany (AP) -- German drug company Merck says it has agreed to buy St. Louis-based chemical firm Sigma-Aldrich Corp. for $17 billion....
By DAVID McHUGH, Associated Press: Business
Mon, 09/22/2014 - 4:11am
FRANKFURT, Germany (AP) -- German drug company Merck says it has agreed to buy St. Louis-based chemical firm Sigma-Aldrich Corp. for $17 billion....