Chelated

http://classyfire.wishartlab.com/tax_nodes/C0000001
http://classyfire.wishartlab.com/tax_nodes/C0000422
http://classyfire.wishartlab.com/tax_nodes/C0000426
http://classyfire.wishartlab.com/tax_nodes/C0000426
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:30185
http://www.hmdb.ca/metabolites/HMDB0015532
http://www.genome.jp/dbget-bin/www_bget?cpd:C00038
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=23994
https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=46506903
https://www.chemspider.com/Chemical-Structure.22430.html
http://www.bindingdb.org/bind/chemsearch/marvin/MolStructure.jsp?monomerid=50259154
https://mor.nlm.nih.gov/RxNav/search?searchBy=RXCUI&searchTerm=11416
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=30185
https://www.ebi.ac.uk/chembldb/index.php/compound/inspect/CHEMBL1201279
http://www.pharmgkb.org/drug/PA451956
https://www.drugs.com/cdi/zinc-oxide-cream.html
https://en.wikipedia.org/wiki/Zinc