Vitamin D2

http://classyfire.wishartlab.com/tax_nodes/C0000000
http://classyfire.wishartlab.com/tax_nodes/C0000012
http://classyfire.wishartlab.com/tax_nodes/C0000258
http://classyfire.wishartlab.com/tax_nodes/C0001460
http://classyfire.wishartlab.com/tax_nodes/C0001460
http://classyfire.wishartlab.com/tax_nodes/C0001553
http://classyfire.wishartlab.com/tax_nodes/C0001661
http://classyfire.wishartlab.com/tax_nodes/C0001292
http://classyfire.wishartlab.com/tax_nodes/C0004150
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:28934
http://www.genome.jp/dbget-bin/www_bget?cpd:C05441
http://www.lipidmaps.org/data/LMSDRecord.php?LMID=LMST03010000
http://www.hmdb.ca/metabolites/HMDB0000900
http://www.genome.jp/dbget-bin/www_bget?drug:D00187
http://www.genome.jp/dbget-bin/www_bget?cpd:C05441
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5280793
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46505053
https://www.chemspider.com/Chemical-Structure.4444351.html
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=4018
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=28934
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1536
https://zinc.docking.org/substances/ZINC000004629876
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000291
http://www.pharmgkb.org/drug/PA449484
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/D2V
http://www.rxlist.com/cgi/generic/ergocalciferol.htm
https://www.drugs.com/cdi/ergocalciferol.html
http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/vit_0265.shtml
https://en.wikipedia.org/wiki/Ergocalciferol