2 3 dibromobutane is chiral July 8, 2019 16 32 64 128 2 3 dibromobutane is chiral or not 2 3 dibromobutane chiral or achiral 2 3 dibromobutane chiral carbon 1 4 dibromobutane 2 3-dibromobutane stereoisomers 2 3 dichlorobutane