What year was the Bayer Group founded ?
Bayer AG is a German multinational pharmaceutical and life sciences company and one of the largest pharmaceutical companies in the world, headquartered in Leverkusen. Founded in Barmen in 1863 as a dyestuffs factory, Bayer's first and best-known product was aspirin. In 1898 Bayer trademarked the name heroin for the drug diacetylmorphine and marketed it as a cough suppressant and non-addictive substitute for morphine until 1910.