Piperazine and Impurities

2-(Furan-2-yl)-5-(piperazin-1-yl)-1,3-oxazole-4-carbonitrile

1-(2-Chloro-benzyl)-3-methyl-piperazine hydrochloride

1-(Azetidin-3-yl)-4-(cyclopropylsulfonyl)piperazine

1-(1-Benzofuran-2-carbonyl)piperazine

(2R,5R)-1-Benzyl-2,5-dimethylpiperazine

1-Methyl-3-(m-tolyl)piperazine-2,5-dione

4-(2,5-Dichlorophenyl)piperazine-2,6-dione

Methyl 3-(2-methylpiperazin-1-yl)propanoate dihydrochloride

3-(4-(2-Hydroxy-3-methoxypropyl)piperazin-1-yl)benzo[d]isothiazole 1,1-dioxide

tert-Butyl 4-(6-nitropyridin-3-yl)piperazine-1-carboxylate

4-(4-Chlorophenyl)-N,N-dimethylpiperazine-1-sulfonamide

1-(2-furylmethyl)piperazine dihydrochloride

2-(4-(3-Chlorophenyl)piperazin-1-yl)-7-(3-fluorophenyl)thieno[3,2-d]pyrimidin-4(1H)-one

Ethyl 1-cyclopropyl-6,8-difluoro-7-(3-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylate

1-Cyclopropyl-3-(2-fluorophenyl)piperazine

4-(2-Amino-ethyl)-3-methyl-piperazine-1-carboxylic acid tert-butyl ester

(4-((4-Chlorophenyl)sulfonyl)piperazin-1-yl)(phenyl)methanone

1-[2-(4-methylpiperazin-1-yl)phenyl]ethan-1-ol

1-{1-[3-(4-methylphenyl)-1,2,4-oxadiazol-5-yl]ethyl}piperazine

1-(Methylsulfonyl)-4-(4-piperidinyl)piperazine dihydrochloride