L-Glu(Otbu)-Otbu-OH

Ester-ka waxa laga sameeyaa fal-celinta esterization ee aashitada inorganic ama aashitada organic ama khamriga.Khamriga ama phenol ama anhydride acidic, alkohol iyo ethylene, acidic acid bilaash ah iyo ka-soo-saaryada nitrogen dufanka leh ayaa sidoo kale dhalin kara ester.Haydaroojiinka ku jira alfa-kaarboon ee molecules-ka ester-ka waxa uu lumiyaa aalkolo molecular ah oo leh ester kale oo unugyo ah oo hoos yimaada xaaladaha alkaline si ay u dhaliyaan β-keto ester, kaas oo loo yaqaan falcelinta ester-ka.Tusaale ahaan, acetyl acetate ayaa loo soo saaray si ay u abuurto acetyl ethyl acetate.Falcelintani aad bay muhiim ugu tahay isku-dhafka dabiiciga ah.

Magaca ester-ku wuxuu ka yimid magaca u dhigma ee karboxilic acid iyo alkohol ama phenol, sida "asiidh gaar ah iyo ester gaar ah".Esters goobada waxaa loo yaqaan lactone (lactone).Qalabka kiimikada ee ester-ku waxay la mid yihiin amyl niche anhydride, taas oo u nugul hydrolysis, khamriga iyo falcelinta ammonia.Ester-hooseeya waa dareere aan midab lahayn oo caraf udgoon, iyo ester horumarsan waa mid adag.Estes waa dareere muhiim ah iyo walxo cayriin ah, iyo qaar ka mid ah ester-yada laftoodu waa daroogo.Marka loo eego nooca aashitada, ester-ka waxa loo qaybin karaa ester aashitada inorganic iyo ester acid organic.Etate, ethyl acetate waa ester dufan, acetate waa ester aromatic, iyo namanonate waa ester wareeg ah.