Piperazine and Impurities

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

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

2-{4-[3-Chloro-5-(trifluoromethyl)-2-pyridinyl]piperazino}acetohydrazide

3-Bromo-2-piperazinopyridine

1-(4-Acetyl-piperazin-1-yl)-3-amino-propan-1-one hydrochloride

1-(4-(Methylsulfonyl)-3-nitrophenyl)piperazine

3-Piperazin-1-yl-pyridine-2-carboxylic acid tert-butyl ester

3-(4-Carbamoylpiperazin-1-yl)propanoic acid

4-(4-(4-(2-Chloro-4-nitrophenyl)piperazine-1-carbonyl)-5-methylisoxazol-3-yl)benzoic acid

(S)-1,3-Dibenzylpiperazine

1-(4-Benzyl-piperazin-1-yl)-2-chloro-ethanone; hydrochloride

Fluphenazine dihydrochloride

(E)-3-(4-Bromophenyl)-1-(4-(4-chlorobenzyl)piperazin-1-yl)prop-2-en-1-one

Benzyl 4-(2-aminoethyl)piperazine-1-carboxylate

1-(3-Chloro-4-fluorophenyl)piperazine dihydrochloride

2-Amino-1-(4-benzyl-piperazin-1-yl)-ethanonedihydrochloride

tert-Butyl 4-(2-bromophenyl)piperazine-1-carboxylate

2-(4-Benzyl-piperazin-1-yl)-2-oxo-acetic acidethyl ester

1-(3-Chloropropyl)-4-(2-methoxyphenyl)piperazine hydrochloride

4-Benzyl 1-(tert-butyl) (S)-2-methylpiperazine-1,4-dicarboxylate