C4H8O2
HCOOCH2CH2CH3 : Propyl Fomat
HCOO(CH3)2 : Isopropyl Fomat.
CH3COOCH2CH3 : Etyl Axetat.
CH3CH2COOCH3: Metyl Propionat.
C4H6O2:
HCOO – CH = CH – CH3 : (cis + trans) Propenyl fomat
HCOO – CH2 - CH = CH2 : Anlyl fomat
HCOO – C(CH3) = CH2 : Iso propenyl fomat
CH3 – COO – CH=CH2 : Vinyl axetat
CH2=CH – COO – CH3 : Metyl acrylat