Softzoint

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:47977
http://www.genome.jp/dbget-bin/www_bget?cpd:C00329
http://www.hmdb.ca/metabolites/HMDB0001514
http://www.genome.jp/dbget-bin/www_bget?drug:D04334
http://www.genome.jp/dbget-bin/www_bget?cpd:C00329
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=439213
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506420
https://www.chemspider.com/Chemical-Structure.388352.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=4845
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=47977
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL493287
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001097
http://www.pharmgkb.org/drug/PA164747613
https://www.drugs.com/cdi/glucosamine.html
https://en.wikipedia.org/wiki/Glucosamine