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nl-N Deze gebruiker heeft het Nederlands als moedertaal.
en-5 This user has professional knowledge of English.
de-2 Dieser Benutzer beherrscht Deutsch auf fortgeschrittenem Niveau.
sv-1 Den här användaren har grundläggande kunskaper i svenska.
fr-1 Cet utilisateur dispose de connaissances de base en français.
Nuvola apps edu science.svgThis user is a member of WikiProject Chemistry.
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Open Scientist, very much involved in the Blue Obelisk (Q4420286) View profile on Scholia movement, Egon Willighagen (Q20895241) View profile on Scholia in the Wikidata database. Co-submitter of the Enabling Open Science: Wikidata for Research (Wiki4R) (Q26707522) View profile on Scholia.[1][2] Also contributed to the Scholia project.[3] Participating in Wikidata since August 2013.[4] Seven years later, on September 19th, I made my 1 millionth edit :) In November 2021 the 2 millionth edit was made.

Chemistry has my main interest, metabolites particularly, but I am interested in science at large, including the process.

Things I am doing or interested in in Wikidata right now include:



Accepted PropertiesEdit

Curation listsEdit



I have started developing a bot to working on metabolic pathways related information.

User:Ureomics and User:UreomicsBotEdit

Based on a request, I have created a third account, again ending with "bot". These two accounts are defunct.

Finished/Retired/Paused tasksEdit

Potentional sources of COIEdit

I have paid positions with Maastricht University (Q1137652)   and with Springer Science+Business Media (Q176916)   as Editor-in-Chief of Journal of Cheminformatics (Q6294930)  .

Authority controlEdit

Authority control
  1. Mietchen, Daniel et al. (2015). Enabling Open Science: Wikidata for Research. Zenodo.
  2. Mietchen, Daniel et al. (2015). Enabling Open Science: Wikidata for Research. Research Ideas and Outcomes 1: e7573.
  3. Nielsen, Finn Å., Mietchen, Daniel Willighagen, Egon, 'Scholia and scientometrics with Wikidata', (2017).
  5. Slenter, D. N., Kutmon, M., Hanspers, K., Riutta, A., Windsor, J., Nunes, N., Mélius, J., Cirillo, E., Coort, S. L., Digles, D., Ehrhart, F., Giesbertz, P., Kalafati, M., Martens, M., Miller, R., Nishida, K., Rieswijk, L., Waagmeester, A., Eijssen, L. M. T., Evelo, C. T., Pico, A. R., Willighagen, E. L., Jan. 2018. WikiPathways: a multifaceted pathway database bridging metabolomics to other omics research. Nucleic Acids Research.