Riboxin

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:48844
http://www.genome.jp/dbget-bin/www_bget?drug:D01710
http://www.genome.jp/dbget-bin/www_bget?cpd:C13173
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=6915744
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46507676
https://www.chemspider.com/Chemical-Structure.5291557.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=9478
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=48935
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1214185
https://zinc.docking.org/substances/ZINC000096006016
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000885
http://www.pharmgkb.org/drug/PA164750505
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/ROX
https://en.wikipedia.org/wiki/Roxithromycin