Regental

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:7575
http://www.hmdb.ca/metabolites/HMDB0014537
http://www.genome.jp/dbget-bin/www_bget?drug:D00438
http://www.genome.jp/dbget-bin/www_bget?cpd:C07267
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4497
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46508497
https://www.chemspider.com/Chemical-Structure.4341.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50101971
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=7426
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=7575
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1428
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000306
http://www.pharmgkb.org/drug/PA450633
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=2523
http://www.rxlist.com/cgi/generic2/nimodip.htm
https://www.drugs.com/cdi/nimodipine.html
https://en.wikipedia.org/wiki/Nimodipine