ParticipantID: metfrag Category: category2 Authors: Schymanski, Emma(1) and Neumann, Steffen(2) Affiliations: (1) Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland (2) IPB Halle, Dept. of Stress and Developmental Biology, Halle, Germany Automatic pipeline: yes Spectral libraries: no Abstract We processed only the LC-MS challenges. The challenge data was converted to MetFrag query files, and processed with MetFrag v0.9. The resulting candidate SDF was converted to CSV as submission.