No confundir Merck & Co (USA) con Merck KGaA (Alemania)
The Merck Group, branded and commonly known as Merck, is a German multinational science and technology company headquartered in Darmstadt, with about 57,000 employees and present in 66 countries. The group includes around 250 companies; the main company is Merck KGaA in Germany
Not to be confused with Merck & Co. (doing business as MSD outside U.S. and Canada), its former subsidiary and now an independent company.