Sincer

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:2379
http://www.hmdb.ca/metabolites/HMDB0015324
http://www.genome.jp/dbget-bin/www_bget?drug:D02338
http://www.genome.jp/dbget-bin/www_bget?cpd:C06803
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=1978
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46509113
https://www.chemspider.com/Chemical-Structure.1901.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=25755
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=149
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=2379
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL642
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000484
http://www.pharmgkb.org/drug/PA448011
http://www.rxlist.com/cgi/generic2/ace.htm
https://www.drugs.com/cdi/acebutolol.html
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/sec1396.shtml
https://en.wikipedia.org/wiki/Acebutolol