1. Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
2. DSM Innovative
Synthesis BV, NL-6167 RD Geleen, The Netherlands
3. c-LEcta GmbH, D-04103 Leipzig, Germany
4. Sigma-Aldrich
Chemie GmbH, CH-9470 Buchs, Switzerland