Piperazine,1-methyl-4-(3-nitrophenyl)- , with CAS number of 148546-97-8, can be called 1-methyl-4-(3-nitrophenyl)piperazine ; 1-Methyl-4-(3-nitro-phenyl)-piperazine ; 1-Methyl-4-(3-nitrophenyl)piperazine 97% .