1. Institute of Organic Chemistry and Center for Molecular Biosciences Leopold-Franzens-University Innsbruck Innrain 80–82 6020 Innsbruck Austria
2. Research and Early Development, Respiratory & Immunology AstraZeneca 43183 Mölndal Sweden
3. Research & Development, Weed Control Chemistry Bayer AG, Crop Science Division Industriepark Höchst 65926 Frankfurt am Main Germany