(2).IUPAC Names of Alkanes 直链: Unbranched a| kanes 支链: Branched alkanes a.常见的烷基: Alkyl group CH3-CHCH2iso-buty异 CH CHCH2CHCH3 sec-butyl仲 3 CH3 tert- butyl叔 CH3 CH3 CH Neo-pentyl 2 新 CH 3(2). IUPAC Names of Alkanes 直链： Unbranched Alkanes 支链: Branched Alkanes a. 常见的烷基：Alkyl group CH CH3 CH3 CH3 CH2 CH2 CH3 { CH iso-butyl sec-butyl 异 仲 CH3 CH3 CH2 { C CH3 CH3 CH3 C CH3 tert -butyl Neo-pentyl 叔 新