(CH3)3C−OH\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OH}(CH3)3C−OH
CH3CH=CHCH3\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CHCH}_{3}CH3CH=CHCH3
NO2CH2−CI\mathrm{NO}_{2} \mathrm{CH}_{2}-\mathrm{CI}NO2CH2−CI
CH3CH(NH2)COOH\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{NH}_{2}\right) \mathrm{COOH}CH3CH(NH2)COOH