Dylix

https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:4728
http://www.hmdb.ca/metabolites/HMDB0014789
http://www.genome.jp/dbget-bin/www_bget?drug:D00691
http://www.genome.jp/dbget-bin/www_bget?cpd:C07819
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=3182
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46504443
https://www.chemspider.com/Chemical-Structure.3070.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=82016
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=3714
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=4728
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1752
http://bidd.nus.edu.sg/group/cjttd/ZFTTDDRUG.asp?ID=DAP000596
http://www.pharmgkb.org/drug/PA164748027
http://www.rxlist.com/cgi/generic2/dyphylline.htm
https://www.drugs.com/cdi/dyphylline.html
https://en.wikipedia.org/wiki/Diprophylline