CH3CHO\mathrm{CH}_{3} \mathrm{CHO}CH3CHO
CH3COCH3\mathrm{CH}_{3} \mathrm{COCH}_{3}CH3COCH3
CH3−CH2−CH3\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{3}CH3−CH2−CH3
CH3−CH2OH\mathrm{CH}_{3}-\mathrm{CH}_{2} \mathrm{OH}CH3−CH2OH