DigiFab

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:4551
http://www.genome.jp/dbget-bin/www_bget?cpd:C06956
http://www.hmdb.ca/metabolites/HMDB0001917
http://www.genome.jp/dbget-bin/www_bget?drug:D00298
http://www.genome.jp/dbget-bin/www_bget?cpd:C06956
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=2724385
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46508524
https://www.chemspider.com/Chemical-Structure.2006532.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=46355
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=3407
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=4551
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1751
https://zinc.docking.org/substances/ZINC000242548690
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000744
http://www.pharmgkb.org/drug/PA449319
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/DGX
http://www.rxlist.com/cgi/generic/dig.htm
https://www.drugs.com/digoxin.html
https://en.wikipedia.org/wiki/Digoxin