C2H6\mathrm{C}_{2} \mathrm{H}_{6}C2H6
CH3−CH2−NH−CH3\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{NH}-\mathrm{CH}_{3}CH3−CH2−NH−CH3
CH3−CH2−NH2\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{NH}_{2}CH3−CH2−NH2
C6H6\mathrm{C}_{6} \mathrm{H}_{6}C6H6
CH3−CH2−NO−CH2−CH3\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{NO}-\mathrm{CH}_{2}-\mathrm{CH}_{3}CH3−CH2−NO−CH2−CH3