2-(2-(4-(2-Methyl-3-(10H-phenothiazin-10-yl)propyl)piperazin-1-yl)ethoxy)ethan-1-ol
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
Thiosildenafil
4-(Piperazin-1-yl)furo[3,2-c]pyridine
4-Nitro-7-(piperazin-1-yl)benzo[c][1,2,5]oxadiazole
(R)-tert-Butyl 4-(5-methyl-7-oxo-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazine-1-carboxylate
4-(Piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine
5-(2-Ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-3-isobutyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
2-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one
Benzo[d][1,3]dioxol-5-yl(piperazin-1-yl)methanone hydrochloride
5-(2-Ethoxy-5-((4-isopropylpiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
2-Benzyl-8-(piperazin-1-yl)-[1,2,4]triazolo[4,3-a]pyrazin-3(2H)-one
N,N-Dimethyl-7-(piperazin-1-yl)benzo[c][1,2,5]oxadiazole-4-sulfonamide
4-Piperazinothieno[3,2-d]pyrimidine
2-(4-Methylpiperazin-1-yl)-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde
6-(5-((2-(4-Ethylpiperazin-1-yl)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)hexanoic acid
2-(4-(2-Methoxyphenyl)piperazin-1-yl)-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde
6-Bromo-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydro-1,5-naphthyridine
5-(Piperazin-1-yl)-[1,2,4]triazolo[4,3-a]pyrimidine dihydrochloride
tert-Butyl 4-((6-(2-aminophenyl)imidazo[2,1-b]thiazol-3-yl)methyl)piperazine-1-carboxylate
