CH (4)叔某基:叔丁基:(CH3)3C-tBu-;叔戊基:CH3CH2C 3 (5)新某基:新戊基:CH3C—CH2 rganIc C emIstryCH3 (4)叔某基: 叔丁基: (CH3 ) 3C- t-Bu- ; 叔戊基: CH3CH2C CH3 CH3 (5)新某基: 新戊基 : CH3—C—CH2— CH3