CH 5 (SH Br Br H (R (RBr H H Br(s ()H C1 H (S (R H H (S) (RH C1 H()(H H ( S CH CH CH 5 (S)H-Br Br--H(R (S)H-Br BrH(R (S)C1 C1((乃H C1 C1 ()H C1 H (S) (S)C1 H H C1(乃 CH CH CH (士) 各对对映体之间都是非对映体的关系。 3)3先手性碳原子,非手性分子,无立体异构体2021/2/23 8