Elfolin

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:15641
http://www.genome.jp/dbget-bin/www_bget?cpd:C00440
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=444412
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=347827954
https://www.chemspider.com/Chemical-Structure.392351.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50391007
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=1025342
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=15641
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1231574
https://zinc.docking.org/substances/ZINC000002005305
http://www.pharmgkb.org/drug/PA166129561
https://www.ebi.ac.uk/pdbe-srv/pdbechem/chemicalCompound/show/THH
https://www.drugs.com/international/levomefolic-acid.html
https://en.wikipedia.org/wiki/Levomefolic_acid