B 1647 ( OTTOKEMI ) Benzylzinc bromide solution , 1.0 M in THF CAS- 62673-31-8 used in chemical research Benzylzinc bromide solution can be used as a nucleophile for the Mannich-type synthesis of 1,2-diarylethylpiperazines. It can also undergo C−C cross coupling reactions with aryl halides.