Vitamin H3

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:8430
http://www.hmdb.ca/metabolites/HMDB0014859
http://www.genome.jp/dbget-bin/www_bget?drug:D08422
http://www.genome.jp/dbget-bin/www_bget?cpd:C07375
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4914
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46507724
https://www.chemspider.com/Chemical-Structure.4745.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=64452
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=8701
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=8430
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL569
https://zinc.docking.org/substances/ZINC000001530757
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000296
http://www.pharmgkb.org/drug/PA451110
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=4291
https://www.drugs.com/mtm/procaine.html
https://en.wikipedia.org/wiki/Procaine