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 Methyl 2-(Boc-piperazin-1-yl)-5-nitrobenzoate 1-(Diphenylmethyl)piperazine 1-(4-Chlorobenzhydryl)piperazine 1-Boc-(4-benzyl)piperazine
 1-Boc-4-(4-formylphenyl)piperazine 4-(Boc-piperazin-1-yl)-3-nitrobenzoic acid 1-(4-tert-Butylbenzyl)piperazine 4-Boc-1-(6-methyl-2-pyridyl)piperazine
 2-(4-Boc-piperazin-1-yl)-2-(furan-2-yl)acetic acid 1-(1-Naphthylmethyl)piperazine 1-(2,3,4-Trimethoxybenzyl)piperazine dihydrochloride 1-(2,4,6-Trimethylbenzyl)piperazine
 1-Boc-4-(5-nitro-2-pyridyl)piperazine 4-Boc-1-(6-bromo-2-pyridyl)piperazine 4-Boc-1-(5-bromo-2-pyridyl)piperazine 2-(4-Boc-piperazin-1-yl)-3-butenoic acid
  4-[(4-Methyl-1-piperazinyl)methyl]benzylamine Benzyl 1-homopiperazinecarboxylate 1-(3-Carbomethoxyphenyl)-4-methylpiperazine 1-(3-Chlorophenyl)-4-(3-chloropropyl)piperazine monohydrochloride
 1-Boc-4-(3-hydroxypropyl)piperazine 1-(4-Methoxybenzyl)piperazine  1-(2-Ethoxyphenyl)piperazine monohydrochloride 1-(4-Methylbenzyl)piperazine
 1-(3-Methylbenzyl)piperazine 1-(2-Phenylethyl)piperazine 1-(2-Methylbenzyl)piperazine 1-[4-(Trifluoromethyl)benzyl]piperazine
 1-[3-(Trifluoromethyl)benzyl]piperazine  1-Boc-4-(2-hydroxyethyl)piperazine 1-(Cyclohexylcarbonyl)piperazine 1-(4-Methoxyphenyl)piperazine
 1-(3-Methoxyphenyl)piperazine 1-(2-Methoxyphenyl)piperazine 1-(o-Tolyl)piperazine hydrochloride 1-Methyl-3-phenylpiperazine
 1-(4-Methylphenyl)piperazine 1-(4-Fluorobenzyl)piperazine  1-(3-Fluorobenzyl)piperazine 1-(2-Fluorobenzyl)piperazine
  1-(4-Chlorobenzyl)piperazine  1-(3-Chlorobenzyl)piperazine 1-(4-Bromobenzyl)piperazine  1-Benzyl-3-oxopiperazine
 1-(3-Formylphenyl)piperazine  1-(2,5-Difluorobenzyl)piperazin 1-(3,4-Dichlorobenzyl)piperazine 1-(2,6-Dichlorobenzyl)piperazine
 1-(2,4-Dichlorobenzyl)piperazine 1-(2-Chloro-6-fluorobenzyl)piperazine 1-(4-Bromo-2-fluorobenzyl)piperazine 1-(2-Cyanophenyl)piperazine
 1-(4-Trifluoromethylphenyl)piperazine 1-(1-Methyl-4-piperidinyl)piperazine 1-(4-Aminophenyl)piperazine 1-(4-Hydroxyphenyl)piperazine
  1-(3-Hydroxyphenyl) piperazine 1-(2-Hydroxyphenyl)piperazine 1-(4-Nitrophenyl)piperazine 1-(4-Iodophenyl)piperazine hydrochloride
 1-(4-Fluorophenyl)piperazine 1-(2-Fluorophenyl)piperazine  1-(2,3-Dichlorophenyl)piperazine hydrochloride 1-(4-Chlorophenyl)piperazine
 1-(3-Chlorophenyl)piperazine hydrochloride Iodonium, (4-butylphenyl)-1-pentyn-1-yl- 3-Iodo-9-phenylcarbazole 1-(2-Chlorophenyl)piperazine monohydrochloride
 1-[3-(Dimethylamino)propyl]piperazine  1-(Tetrahydro-2-furylmethyl)piperazine  1-(2-Furoyl)piperazine  1-[2-(Dimethylamino)ethyl]piperazine
 1,4-Bis(2-hydroxyethyl)piperazine 1-[2-(2-Hydroxyethoxy)ethyl]piperazine  1-(2-Ethoxyethyl)piperazine  1-(1,3-Dioxolan-2-ylmethyl)piperazine
 1-(Cyclopropylmethyl)piperazine 1-(Cyclopropylcarbonyl)piperazine  1-(2-Methoxyethyl)piperazine Ethyl 1-piperazinecarboxylate
 1-Amino-4-(2-hydroxyethyl)piperazine  4-Methyl-1-piperazinecarbonyl chloride 1-Amino-4-methylpiperazine  3-Quinuclidinylxanthene-9-carboxylic acid hemioxalate salt
 3-Chloro-N-(3-quinuclidinyl)benzamide  1-(1-Ethoxy-2-propynyl)-1H-benzotriazole  1-(2-Pyridinylsulfonyl)-1H-benzotriazole  1-(2-Thienylsulfonyl)-1H-benzotriazole
 5-Methyl-1H-benzotriazole 1-Aminobenzotriazole  4-Hydroxy-1H-benzotriazole 1H-1,2,3-Triazolo[4,5-b]pyridine
  6,7-Dimethyl-2,3-di(2-pyridyl)quinoxaline  2-Amino-1-(4-aminophenyl)-1H-pyrrolo(2,3-b)quinoxaline-3-carbonitrile Ethyl 2-quinoxalinecarboxylate  3-Hydroxy-2-quinoxalinecarboxylic acid
  4-Benzylidene-2-phenyl-2-oxazolin-5-one 6-Benzyloxy-2-benzoxazolinone 2-(2-Methoxyphenyl)-4,4-dimethyl-2-oxazoline  4-Ethoxymethylene-2-phenyl-2-oxazolin-5-one
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