4-Benzylpiperazin-1-amine
1-amino-4-benzylpiperazine

N-(4-Benzylpiperazin-1-yl)-2,2,2-trifluoroacetamide
Acetamide, 2,2,2-trifluoro-N-[4-(phenylmethyl)-1-piperazinyl]-

(R)-1-BOC-2-Benzylpiperazine

(S)-1-BOC-2-Benzylpiperazine

(R)-1-Boc-2-Ethylpiperazine

(S)-1-BOC-2-Ethylpiperazine

(R)-1-BOC-2-(Hydroxymethyl)piperazine
tert-butyl (2R)-2-(hydroxymethyl)piperazine-1-carboxylate

(S)-1-BOC-2-(Hydroxymethyl)piperazine
tert-Butyl (2S)-2-(hydroxymethyl)piperazine-1-carboxylate

(R)-1-BOC-3-(Hydroxymethyl)piperazine
tert-butyl (3R)-3-(hydroxymethyl)piperazine-1-carboxylate

(S)-1-BOC-3-(Hydroxymethyl)piperazine
tert-Butyl (3S)-3-(hydroxymethyl)piperazine-1-carboxylate

(S)-1-BOC-2-Isopropylpiperazine
tert-butyl (2S)-2-isopropylpiperazine-1-carboxylate

(R)-1-BOC-2-methylpiperazine
tert-Butyl (2R)-2-methylpiperazine-1-carboxylate

(S)-1-BOC-2-Methylpiperazine
tert-butyl (2S)-2-methylpiperazine-1-carboxylate

(S)-1-N-BOC-Piperazine-2-carboxylic acid methyl ester

2-(4-(tert-Butoxycarbonyl)-2-methylpiperazin-1-yl)acetic acid
1-Piperazineacetic acid, 4-[(1,1-dimethylethoxy)carbonyl]-2-methyl-

N-tert-Butoxycarbonylpiperazine
N-(BOC)-piperazine

2-(4-tert-Butoxycarbonylpiperazin-1-yl)acetic acid
1-Piperazineacetic acid, 4-[(1,1-dimethylethoxy)carbonyl]-

tert-Butyl 4-(2-aminoethyl)piperazine-1-carboxylate
1-Piperazinecarboxylic acid, 4-(2-aminoethyl)-, 1,1-dimethylethyl ester

tert-Butyl 4-aminopiperazine-1-carboxylate
1-Piperazinecarboxylic acid, 4-amino-, 1,1-dimethylethyl ester

tert-Butyl 4-[(ethoxycarbonyl)methyl]piperazine-1-carboxylate
1-Piperazineacetic acid, 4-[(1,1-dimethylethoxy)carbonyl]-, ethyl ester

tert-Butyl 2-methyl-3-oxo-piperazine-1-carboxylate
1-Piperazinecarboxylic acid, 2-methyl-3-oxo-, 1,1-dimethylethyl ester

tert-Butyl 4-(3-nitro-2-pyridyl)piperazine-1-carboxylate
1-Piperazinecarboxylic acid, 4-(3-nitro-2-pyridinyl)-, 1,1-dimethylethyl ester

tert-Butyl 3-oxopiperazine-1-carboxylate
1-Piperazinecarboxylic acid, 3-oxo-, 1,1-dimethylethyl ester

tert-Butyl 4-(2,2,2-trifluoroacetamido)piperazine-1-carboxylate
1-Piperazinecarboxylic acid, 4-[(2,2,2-trifluoroacetyl)amino]-, 1,1-dimethylethyl ester

2,5-Diazabicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

1-(2,3-Dichlorophenyl)piperazine hydrochloride

3,3-Dimethyl-1-methylsulfonylpiperazine

4-(4-Ethyl-1-piperazinyl)-3-fluoro-benzenamine
Benzenamine, 4-(4-ethyl-1-piperazinyl)-3-fluoro-

3-fluoro-4-(4-methyl-1-piperazinyl)benzenamine
Benzenamine, 3-fluoro-4-(4-methyl-1-piperazinyl)-

1-(2-Hydroxyethyl)-4-methylpiperazine
2-(4-Methyl-piperazin-1-yl)-ethanol

Methyl 2-(3-oxopiperazin-1-yl)acetate
1-Piperazineacetic acid, 3-oxo-, methyl ester

1-Methylpiperazin-2-one

1,2,2-Trimethylpiperazine hydrochloride
Piperazine, 1,2,2-trimethyl-, hydrochloride