Piperazine and Impurities

1,1'-(Piperazine-1,4-diyl)bis(3-bromopropan-1-one)

2-methyl-1-(pentan-2-yl)piperazine

2-Amino-5-(4-methyl-piperazin-1-yl)-benzonitrile

N-t-Butylpiperazine

[(2S)-4-benzylpiperazin-2-yl]methanol dihydrochloride

1-(Pyridin-3-yl)piperazine hydrochloride

(R)-1-(1-(4-Fluorophenyl)ethyl)piperazine

3-(Piperazin-1-yl)-6-(o-tolyl)pyridazine

(S)-2-(4-Fluoro-2-methylphenyl)piperazine dihydrochloride

Methyl 4-(3-methylpiperazin-1-ylmethyl)benzoate

1-Cyclohex-3-enylmethyl-piperazine trifluoroacetate

6-bromo-4-(4-methylpiperazin-1-yl)quinazoline

N-[4-Nitro-2-(trifluoromethyl)phenyl]piperazine

4-Chloro-6-piperazin-1-yl-pyrimidine hydrochloride

Methyl piperazine-1-carboxylate hydrochloride

tert-Butyl 4-(5-bromo-3-methylpyridin-2-yl)piperazine-1-carboxylate

5-(4-Methylpiperazin-1-yl)nicotinic acid

1-[3-(3-chlorophenyl)-1,2,4-thiadiazol-5-yl]piperazine

3-Amino-1-(4-methylpiperazin-1-yl)propan-1-one

2-{4-[5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl]piperazin-1-yl}ethanol