In the new Sanofi R&D organization, H. Haag is responsible for sourcing and external business within the Lead Generation department and is a member of its leadership team. H. Haag joined Sanofi in 2000 heading the natural products screening group. Since then he was holding various leading positions in the area of lead identification. In 1995 he became head of the new established natural products group at Boehringer Ingelheim. In addition he was responsible for early pharmacokinetics in the drug discovery department of BI. From 1992-1995 he worked as a postdoctoral fellow in the lead discovery unit of Novartis, Switzerland. H. Haag received his PhD in 1992 at the University of Tübingen in the laboratory of Prof. Zaehner on the screening for novel iron chelators, their isolation and chemical characterization.