Optal

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:63845
http://www.hmdb.ca/metabolites/HMDB0014772
http://www.genome.jp/dbget-bin/www_bget?drug:D05947
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5320
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504544
https://www.chemspider.com/Chemical-Structure.5129.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50316126
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=10169
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=63845
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL455
https://zinc.docking.org/substances/ZINC000005179119
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP001191
http://www.pharmgkb.org/drug/PA451536
http://www.rxlist.com/cgi/generic3/plexion.htm
https://www.drugs.com/cdi/sulfacetamide-drops.html
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/ava1674.shtml
https://en.wikipedia.org/wiki/Sulfacetamide