C2H5−NH2\mathrm{C}_{2} \mathrm{H}_{5}-\mathrm{NH}_{2}C2H5−NH2
C6H5NO2\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}C6H5NO2
C6H5−NH2\mathrm{C}_{6} \mathrm{H}_{5}-\mathrm{NH}_{2}C6H5−NH2
(CH3)3N\left(\mathrm{CH}_{3}\right)_{3} \mathrm{N}(CH3)3N