Gadzira shanduro yakaoma zvikuru yemutsara uyu Mu kemisitiri, esters ndiwo makemikari akaumbwa kubva mukunyungudika kweasidhi nedoro.
Zvechokwadi, shanduro yakaoma zvikuru yemutsara ndeyekuti "Mu kemisitiri, esters inonzi makemikari akaumbwa kubva kune inorganic acid kana organic acid umo imwe chete - OH (hydroxyl) boka rinotsiviwa ne - O - alkyl (alkoxy) boka. "