Cromodyn

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:59773
http://www.hmdb.ca/metabolites/HMDB0015138
http://www.genome.jp/dbget-bin/www_bget?drug:D07753
http://www.genome.jp/dbget-bin/www_bget?cpd:C06928
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=2882
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504509
https://www.chemspider.com/Chemical-Structure.2779.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50440033
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=2921
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=59773
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL428880
https://zinc.docking.org/substances/ZINC000001530788
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000819
http://www.pharmgkb.org/drug/PA449138
http://www.rxlist.com/cgi/generic/cromolyn.htm
https://en.wikipedia.org/wiki/Cromoglicic_acid