Piperazine and Impurities

1-(3-methylpiperazin-1-yl)-2-phenoxyethan-1-one

3-Cyclopropylpiperazin-2-one

(4-(Piperazin-1-yl)phenyl)(pyridin-4-yl)methanone

2-(2-methylpiperazin-1-yl)acetonitrile

6-(4-phenylpiperazin-1-yl)-2,3-dihydropyridazin-3-one

4-({[1-(chloroacetyl)-3-oxopiperazin-2-yl]acetyl}amino)-N-methylbenzamide

3-(4-methylpiperazinomethyl)-4'-thiomethylbenzophenone

2-(4-(4-Fluorophenyl)piperazin-1-yl)-N-(4-methoxyphenyl)acetamide

(3S)-1-Benzyl-3-(propan-2-yl)piperazine

1-(3-Fluoro-2-nitrophenyl)-4-methylpiperazine

3-(3-bromophenyl)-6-(piperazin-1-yl)pyridazine

2-(4-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazin-1-yl)ethanol

Methyl 5-amino-2-(4-benzylpiperazin-1-yl)benzoate

1-sec-Butyl-4-(2-chloro-ethyl)-piperazine dihydrochloride

2-Chloro-1-[4-(2-furanylcarbonyl)-1-piperazinyl]ethanone

4-(4-Benzyl-piperazin-1-yl)-piperidine-1-carboxylic acid tert-butyl ester

6-(4-Methylpiperazin-1-yl)-1H-indole

(4-Amino-1,2,5-oxadiazol-3-yl)(4-methylpiperazin-1-yl)methanone

1-(3-Fluoro-benzyl)-piperazine-2-carboxylic acid hydrochloride

1-(2,4-dinitrophenyl)-3-methylpiperazine