CH3 CH3 CH CH3-C-OH CH3 -N CH2-C-NH CH3 CH CH3 叔醇 叔胺 伯胺 CHaNH 2 (CH3)2NH (CH3)3N 伯胺(一级胺)仲胺(二级胺)叔胺(三级胺)CH3 C CH3 CH3 OH CH3 C CH3 CH3 CH3 N NH2 CH3 CH3 叔醇 叔胺 伯胺 伯胺(一级胺) 仲胺(二级胺) 叔胺(三级胺) CH3NH2 (CH3)2NH (CH3)3N