In chemistry, a<unk>  is an anion, salt, functional group or ester derived from a<unk> hosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid . The<unk>  or orthophosphate ion is derived from<unk> hosphoric acid by the removal of three<unk> rotons . Removal of one or two<unk> rotons gives the dihydrogen<unk>  ion and the hydrogen<unk>  ion ion, respectively. These names are also used for salts of those anions, such as ammonium dihydrogen<unk>  and trisodium<unk> . File:3-phosphoric-acid-3D-balls.Phosphoricacid File:2-dihydrogenphosphate-3D-balls.Dihydrogenphosphate File:1-hydrogenphosphate-3D-balls.Hydrogenphosphate File:0-phosphate-3D-balls.Phosphate In organic chemistry,<unk>  or orthophosphate is an organophosphate, an ester of orthophosphoric acid of the form where one or more hydrogen atoms are replaced by organic groups. An example is trimethyl<unk> , . The term also refers to the trivalent functional group in such esters. Orthophosphates are especially important among the various<unk> s because of their key roles in biochemistry, biogeochemistry, and ecology, and their economic importance for agriculture and industry. The addition and removal of<unk>  groups <unk> hosphorylation and dephosphorylation) are key steps in cell metabolism. Orthophosphates can condense to form<unk> yrophosphates.
Phosphate
Phosphine
High-energy phosphate
Calcium
Potassium
Fluoride
Nitrate
Chorus