2-(2-Ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one
1-((2,4-Dichlorophenyl)sulfonyl)piperazine hydrochloride
1-(Isopropylsulfonyl)piperazine
1-((3-Fluorophenyl)sulfonyl)piperazine
1,4-Ditosylpiperazine
tert-Butyl 4-(chlorosulfonyl)piperazine-1-carboxylate
3-((4-Methylpiperazin-1-yl)sulfonyl)aniline
Thiosildenafil
1-((2,4-Dichlorophenyl)sulfonyl)-2-methylpiperazine hydrochloride
N,N-Dimethyl-5-(piperazin-1-ylsulfonyl)naphthalen-1-amine
N,N-Dimethylpiperazine-1-sulfonamide
1-(Ethylsulfonyl)piperazine
1-((4-Isopropylphenyl)sulfonyl)piperazine
4-(4-(Methylsulfonyl)piperazin-1-yl)aniline
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
4-((4-Methylpiperazin-1-yl)sulfonyl)benzoic acid
2-Methyl-1-(m-tolylsulfonyl)piperazine hydrochloride
1-((3-Bromophenyl)sulfonyl)piperazine
tert-Butyl 4-((2-aminoethyl)sulfonyl)piperazine-1-carboxylate
5-(2-Ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-3-isobutyl-1-methyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
