Atcurium

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:2915
http://www.genome.jp/dbget-bin/www_bget?drug:D00758
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=47320
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504689
https://www.chemspider.com/Chemical-Structure.43068.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50149881
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=1219
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=2915
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1200527
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000105
http://www.pharmgkb.org/drug/PA164776840
http://www.rxlist.com/cgi/generic2/trac.htm
https://en.wikipedia.org/wiki/Atracurium_besilate