Gluconolactone

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:16217
http://www.hmdb.ca/metabolites/HMDB0000150
http://www.genome.jp/dbget-bin/www_bget?drug:D04332
http://www.genome.jp/dbget-bin/www_bget?cpd:C00198
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=7027
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506698
https://www.chemspider.com/Chemical-Structure.6760.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50366565
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=25842
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=16217
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1200829
https://zinc.docking.org/substances/ZINC000002539702
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/LGC
https://en.wikipedia.org/wiki/Gluconolactone