CH3CH(NH2)COOH\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{NH}_{2}\right) \mathrm{COOH}CH3CH(NH2)COOH
CH2(NH2)COOH\mathrm{CH}_{2}\left(\mathrm{NH}_{2}\right) \mathrm{COOH}CH2(NH2)COOH
(CH3)2C=CHCl\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}=\mathrm{CHCl}(CH3)2C=CHCl
O2 N−CH2Cl\mathrm{O}_{2} \mathrm{~N}-\mathrm{CH}_{2} \mathrm{Cl}O2 N−CH2Cl