Syscor

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:76917
http://www.hmdb.ca/metabolites/HMDB0014545
http://www.genome.jp/dbget-bin/www_bget?drug:D00618
http://www.genome.jp/dbget-bin/www_bget?cpd:C07699
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4499
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504546
https://www.chemspider.com/Chemical-Structure.4343.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50101963
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=7435
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=76917
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1726
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000595
http://www.pharmgkb.org/drug/PA450634
http://www.guidetopharmacology.org/GRAC/LigandDisplayForward?ligandId=2524
http://www.rxlist.com/cgi/generic/nisoldipine.htm
https://www.drugs.com/cdi/nisoldipine-extended-release-tablets.html
https://en.wikipedia.org/wiki/Nisoldipine