Hoechst, one of the companies resulting from the post-WWII split of IG Farben, had seven primary businesses: Hoechst Marion Roussel (pharmaceuticals), AgrEvo (a joint venture with Schering in crop protection agents and pest control products), HR Vet (veterinary products), Dade Behring (diagnostics), Centeon, Celanese (chemicals), and Messer (chemicals).