Piren

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:8247
http://www.hmdb.ca/metabolites/HMDB0014808
http://www.genome.jp/dbget-bin/www_bget?drug:D08389
http://www.genome.jp/dbget-bin/www_bget?cpd:C07508
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=4848
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46509029
https://www.chemspider.com/Chemical-Structure.4682.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=39341
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=8352
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=8247
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL9967
https://zinc.docking.org/substances/ZINC000019632927
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000492
http://www.pharmgkb.org/drug/PA10159
https://en.wikipedia.org/wiki/Pirenzepine