![Piperazine, 1-[3-(4-chlorophenyl)-1-oxo-2-propenyl]-](/structure/770722-66-2.png)
![Piperazine, 1-[3-(4-chlorophenyl)-1-oxo-2-propenyl]-](/structure/770722-66-2.png)

1-Piperazinecarboxylic acid, 4-(8,9-dimethyl-9H-purin-6-yl)-,1,1-dimethylethyl ester


1-Piperazinecarboxamide,N-4-isoquinolinyl-4-(3-phenyl-1,2,4-thiadiazol-5-yl)-
![Piperazine, 1-[4-[1,1'-biphenyl]-4-yl-5-(phenylthio)-2-thiazolyl]-](/structure/497144-66-8.png)
Piperazine, 1-[4-[1,1'-biphenyl]-4-yl-5-(phenylthio)-2-thiazolyl]-

![1-Piperazinecarboxylic acid,4-[4-[(4-cyclohexylbenzoyl)amino]-2-methoxyphenoxy]-,1,1-dimethylethyl ester](/structure/909783-66-0.png)
![1-Piperazinecarboxamide,N-[3-(acetylamino)phenyl]-4-(4-phenyl-2-thiazolyl)-](/structure/887622-66-4.png)
1-Piperazinecarboxamide,N-[3-(acetylamino)phenyl]-4-(4-phenyl-2-thiazolyl)-

![Piperazine,1-(4-cyano-3-fluorophenyl)-4-[2-(4-morpholinyl)-5-nitrobenzoyl]-](/structure/847969-66-8.png)
Piperazine,1-(4-cyano-3-fluorophenyl)-4-[2-(4-morpholinyl)-5-nitrobenzoyl]-
![Piperazine,1-benzoyl-4-[[4-methoxy-7-(3-pyridinyl)-1H-indol-3-yl]oxoacetyl]-](/structure/389628-66-4.png)
Piperazine,1-benzoyl-4-[[4-methoxy-7-(3-pyridinyl)-1H-indol-3-yl]oxoacetyl]-

![Piperazine,1-(4-methoxybenzoyl)-4-[[2-(3,4,5-trimethoxyphenyl)-4-pyridinyl]methyl]-,(2Z)-2-butenedioate](/structure/681484-66-2.png)
![1-Piperazineethanol,a-[[(1-ethynylhydroxycyclohexyl)oxy]methyl]-4-(4-hydroxy-3-methylphenyl)-](/structure/137911-66-1.png)
1-Piperazineethanol,a-[[(1-ethynylhydroxycyclohexyl)oxy]methyl]-4-(4-hydroxy-3-methylphenyl)-
![1-Piperazineacetamide,N-[6-[(3,4-dihydro-2-phenyl-2H-1-benzopyran-6-yl)oxy]-3-pyridinyl]-,dihydrochloride](/structure/728936-66-1.png)
![1-[4-(4-chlorophenoxy)butyl]-4-(2-methoxyphenyl)piperazine](/structure/2033-66-1.png)


1-Piperazinecarboxylic acid,4-(6-chloro-2-methoxy-5-nitro-4-pyrimidinyl)-, 1,1-dimethylethyl ester
![Piperazine, 1,4-bis[(3,4-dichlorophenyl)methyl]-](/structure/139605-66-6.png)
![Piperazine, 1-(2,3-dihydro-1,1-dioxidobenzo[b]thien-3-yl)-4-methyl-](/structure/140616-66-6.png)
Piperazine, 1-(2,3-dihydro-1,1-dioxidobenzo[b]thien-3-yl)-4-methyl-
![Piperazine, 1-(2-pyridinyl)-4-[4-(4-pyridinyl)butyl]-](/structure/140703-66-8.png)
![Piperazine,1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-[(4-nitrophenyl)sulfonyl]-](/structure/766532-66-5.png)
Piperazine,1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-[(4-nitrophenyl)sulfonyl]-
![Piperazine,1-(4-acetyl-2-fluorophenyl)-4-[2-chloro-5-(methylsulfonyl)benzoyl]-](/structure/847545-66-8.png)
Piperazine,1-(4-acetyl-2-fluorophenyl)-4-[2-chloro-5-(methylsulfonyl)benzoyl]-
![Piperazine, 1-(2,2-dimethylpropyl)-4-[4-nitro-2-(trifluoromethyl)phenyl]-](/structure/853297-66-2.png)
Piperazine, 1-(2,2-dimethylpropyl)-4-[4-nitro-2-(trifluoromethyl)phenyl]-


Piperazine, 1-(3-chloropropyl)-4-(3-methoxyphenyl)-, dihydrochloride

tert-butyl 4-(6-(3-(cyclopentyloxy)-4-isopropylphenyl)pyridin-2-yl)piperazine-1-carboxylate

1-Piperazineethanol,a-(2,4-difluorophenyl)-a-(1H-1,2,4-triazol-1-ylmethyl)-
![1-(6,11-dihydrodibenzo[b,e]oxepin-11-yl)-4-methylpiperazine (2Z)-but-2-enedioate](/structure/17021-66-8.png)
1-(6,11-dihydrodibenzo[b,e]oxepin-11-yl)-4-methylpiperazine (2Z)-but-2-enedioate

![Piperazine, 1-methyl-4-[(2-oxo-1-pyrrolidinyl)acetyl]-,(E)-2-butenedioate (1:1)](/structure/141098-66-0.png)
Piperazine, 1-methyl-4-[(2-oxo-1-pyrrolidinyl)acetyl]-,(E)-2-butenedioate (1:1)

2,5-Piperazinedione, 1-(2-butenyl)-4-methyl-3,6-bis(phenylmethylene)-,(3Z,6Z)-
![1-Piperazinecarboxamide,N-[3-(4-chlorophenyl)propyl]-4-[3-(trifluoromethyl)-2-pyridinyl]-](/structure/839722-66-6.png)
1-Piperazinecarboxamide,N-[3-(4-chlorophenyl)propyl]-4-[3-(trifluoromethyl)-2-pyridinyl]-
![1-Piperazinecarboxamide,N-[4-[4-amino-2-[[[(methylamino)carbonyl]amino]methyl]-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]butyl]-4-methyl-, trifluoroacetate](/structure/872128-66-0.png)
![1-Piperazinecarboxamide, 4-(benzo[b]thien-2-ylmethyl)-N-phenyl-](/structure/898235-66-0.png)
1-Piperazinecarboxamide, 4-(benzo[b]thien-2-ylmethyl)-N-phenyl-
![Piperazine,1-[(3-methyl-1-phenyl-1H-pyrazol-5-yl)carbonyl]-4-(4-quinolinyl)-](/structure/756751-66-3.png)
Piperazine,1-[(3-methyl-1-phenyl-1H-pyrazol-5-yl)carbonyl]-4-(4-quinolinyl)-