CH3-CH2-CH2-CH2-COOH
CH3-CH(CH3)-CH2-COOH
CH3-CH2-CH(CH3)-COOH
(CH3)3C-COOH
Este:
HCOOCH3-CH2-CH2-CH3
HCOOCH2-CH(CH3)-CH3
HCOOCH(CH3)-CH2-CH3
HCOOC(CH3)3
CH3-COOCH2-CH2-CH3
CH3-COOCH(CH3)-CH3
CH3-CH2-COOCH2-CH3
CH3-CH2-CH2COOCH3
(CH3)2CHCOOCH3