alcool: CxH(2x+2)O
acid : CxH2xO2
(14x+18)/(14x+32) = 863/1000
(14x+18)/14 = 863/137 14x +18 = 88,19 14x ≈70 x = 5
alcool : C5H12O
acid : C5H10O2
esteri : R1-COOR2 HCOOC4H9 (3 izomeri : -C4H9 = 1butil , sau secbutil ,sau tertbutil; ) CH3-COOC2H5; CH3-CH2-COOCH3