C6H5NH2\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}C6H5NH2
(CH3)2NH\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}(CH3)2NH
CH3NH2\mathrm{CH}_{3} \mathrm{NH}_{2}CH3NH2
(CH3)3 N\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}(CH3)3 N
