VisOptic

http://classyfire.wishartlab.com/tax_nodes/C0000000
http://classyfire.wishartlab.com/tax_nodes/C0002448
http://classyfire.wishartlab.com/tax_nodes/C0000048
http://classyfire.wishartlab.com/tax_nodes/C0000048
http://classyfire.wishartlab.com/tax_nodes/C0003886
http://classyfire.wishartlab.com/tax_nodes/C0000079
http://classyfire.wishartlab.com/tax_nodes/C0003633
http://classyfire.wishartlab.com/tax_nodes/C0003152
http://classyfire.wishartlab.com/tax_nodes/C0001045
http://classyfire.wishartlab.com/tax_nodes/C0004139
http://classyfire.wishartlab.com/tax_nodes/C0004557
http://classyfire.wishartlab.com/tax_nodes/C0004150
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:28674
http://www.genome.jp/dbget-bin/www_bget?drug:D08578
http://www.genome.jp/dbget-bin/www_bget?cpd:C07912
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5419
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=310264881
https://www.chemspider.com/Chemical-Structure.5226.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=96559
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=37935
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=28674
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1266
https://www.drugs.com/international/tetryzoline.html
https://en.wikipedia.org/wiki/Tetryzoline