amongst 1- ( substituted benzyl ) -4- ( substituted benzoyl ) piperazines exhibiting central nervous system ( 1 , 2 ) depressant activity it was found that 1- ( 2-chlorobenzyl ) -4- ( 2-chlorobenzoyl ) piperazine possessed maximum activity ( 2 ) .
C0031958
piperazines
C0031957
possessed