1-(Diphenylmethyl)piperazine 1-Benzhydrylpiperazine 4-Benzhydrylpiperazine 5-23-01-00231 (Beilstein Handbook Reference) 56609-03-1 841-77-0 BRN 0222773 Benzhydrylpiperazine Diphenylmethylpiperazine EINECS 212-667-7 N-(Diphenylmethyl)piperazine N-Benzhydrylpiperazine NSC 35536 Norcyclizine Normethylcyclizine Piperazine, 1-(diphenylmethyl)-