Cyclotak

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:4024
http://www.hmdb.ca/metabolites/HMDB0015114
http://www.genome.jp/dbget-bin/www_bget?cpd:C06932
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=2905
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504517
https://www.chemspider.com/Chemical-Structure.2802.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=82375
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=3001
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=4024
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1201338
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001111
http://www.pharmgkb.org/drug/PA164743019
https://www.drugs.com/cdi/cyclopentolate.html
https://en.wikipedia.org/wiki/Cyclopentolate