Piperazine e Impurezas

1-(3-Bromo-5-fluorophenyl)piperazine hydrochloride

tert-Butyl 4-(4-(hydroxymethyl)phenyl)piperazine-1-carboxylate

Methylpiperazine-1-carboxylate

1-(chloroacetyl)-4-[(2,6-difluorophenyl)sulfonyl]piperazine

(S)-tert-butyl 4-benzyl-2-isopropylpiperazine-1-carboxylate

1-[(5-bromothiophen-2-yl)sulfonyl]piperazine (hydrochloride)

3-Fluoro-4-(4-propylpiperazin-1-yl)aniline

4-(2-Chloroacetyl)-n-phenylpiperazine-1-carboxamide

2-(Piperazin-1-yl)acetic acid ethyl ester

(2S,6S)-2,6-Dimethylpiperazine dihydrochloride

4-{[6-(piperazin-1-yl)pyridin-3-yl]sulfonyl}morpholine

tert-Butyl 3-(piperazin-1-yl)azetidine-1-carboxylate

(3R,6R)-1-tert-Butyl 3-methyl 6-methylpiperazine-1,3-dicarboxylate

2-(1-tert-Butoxycarbonylpiperazin-4-yl)acetic acid

4-((4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)sulfonyl)-1-methylpiperazine 1-oxide (Sildenafil Impuruity)

4-N-BOC-2-ETHYLPIPERAZINE-HCL

(S)-N-((3-(3-Fluoro-4-(piperazin-1-yl)phenyl)-2-oxooxazolidin-5-yl)methyl)acetamide

Methyl 2-(2-oxopiperazin-1-yl)acetate hydrochloride

4-[6-[[6-(1-Butoxyvinyl)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl]amino]pyridin-3-yl]piperazine-1-carboxylic acid tert-butyl ester

1-(4-Chloro-pyridin-2-yl)-piperazine