Citric acid (${\mathrm{C}}_6{\mathrm{H}}_8{\mathrm{O}}_7$)

Its chemical formula and structure are recorded in ChEBI, citric acid.

Citrate denotes an ion derived from citric acid. The commonly specified form has electric charge equal to that of three electrons and chemical formula ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{O}}_7^{3-}$; it results from removing three hydrogen ions from citric acid. Forms with additional hydrogen ions attached through protonation also occur. ^[ref]