CH3−CH2−CHO\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CHO}CH3−CH2−CHO
CH3CH2−COOH\mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{COOH}CH3CH2−COOH
CH3−CH2−CH3\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{3}CH3−CH2−CH3
CH3−CH2−CH2−CHO\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CHO}CH3−CH2−CH2−CHO
