FRANKFURT (Reuters) - Drugs and chemicals maker Merck KGaA agreed on Monday to acquire U.S.-based Sigma-Aldrich Corp for $17 billion (10.41 billion pounds) in cash to boost its lab supplies business, ...

FRANKFURT (Reuters) - Drugs and chemicals maker Merck KGaA expects its credit ratings to remain at investment grade levels following its planned acquisition of Sigma-Aldrich , its finance chief said. ...

FRANKFURT, Germany (AP) — German drug company Merck says it has agreed to buy St. Louis-based chemical firm Sigma-Aldrich Corp. for $17 billion in a deal Merck says will strengthen its business in ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Sigma-Aldrich corporate office at 3050 Spruce Street in St. Louis on Monday, Sept. 22, 2014. Photo by David Carson of the ...