Thiamine Diphosphate

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:45931
http://www.hmdb.ca/metabolites/HMDB0062636
http://www.genome.jp/dbget-bin/www_bget?cpd:C00068
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5431
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504577
https://www.chemspider.com/Chemical-Structure.5238.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=10459
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=45931
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1236235
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/TDP
https://en.wikipedia.org/wiki/Thiamine_pyrophosphate