2-Mercaptomethyl pyrazine59021-02-232 % similar 2-Pyrazinemethanol6705-33-532 % similar 1-(2-Piperidinoethyl)piperazine22763-65-132 % similar 1-(2-Fluorophenyl)piperazine1011-15-032 % similar 2-(1-Piperazinyl)phenol1011-17-232 % similar 1-(4-Chlorophenyl)piperazine hydrochloride13078-12-132 % similar N-(4-Chlorophenyl)piperazine dihydrochloride38869-46-432 % similar 1-(2-Chlorophenyl)piperazine39512-50-032 % similar 2-Mepp39512-51-132 % similar 1-(3,4-Dichlorophenyl)piperazine57260-67-032 % similar 1-(3-Chlorophenyl)piperazine6640-24-032 % similar Methylpyrazine109-08-031 % similar Chloropyrazine14508-49-731 % similar Iodopyrazine32111-21-031 % similar 2-Fluoropyrazine 984949-13-731 % similar Aminopyrazine5049-61-631 % similar 2-Bromopyrazine56423-63-331 % similar 1-(5-Isoquinolinylsulfonyl)piperazine84468-24-631 % similar 2-Piperazin-1-yl-1,3-benzothiazole55745-83-031 % similar 3-(1-Piperazinyl)-1,2-benzisothiazole87691-87-031 % similar