piperazine, 1-(3-methylphenyl)- , with CAS number of 41186-03-2, can be called 1-(3-Methylphenyl)piperazine ; 1-(3-Methylphenyl)piperazine 98% ; 1-(m-tolyl)piperazine dihydrochloride ; 1-(m-tolyl)piperazine ; 1-m-Tolyl-piperazine . It is a clear colorless to yellow viscous liquid.