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tert-Butyl 4-(2-chloroacetyl)-3-methylpiperazine-1-carboxylate

tert-Butyl 4-(2-chloronicotinoyl)-3-methylpiperazine-1-carboxylate

(2-Chloropyridin-3-yl)(2-methylpiperazin-1-yl)methanone hydrochloride

4-(tert-Butoxycarbonyl)-1-(3-methylthiophene-2-carbonyl)piperazine-2-carboxylic acid

tert-Butyl 2-methyl-4-(3-methylthiophene-2-carbonyl)piperazine-1-carboxylate

tert-Butyl 4-(5-bromo-1,3,4-thiadiazol-2-yl)piperazine-1-carboxylate

2-Methyl-1-(m-tolylsulfonyl)piperazine hydrochloride

1-(Pyridin-2-ylsulfonyl)piperazine hydrochloride

tert-Butyl 4-(2-chloroacetyl)-2-methylpiperazine-1-carboxylate

1-((2,4-Dichlorophenyl)sulfonyl)-2-methylpiperazine hydrochloride

tert-Butyl 4-(2-chloronicotinoyl)-2-methylpiperazine-1-carboxylate

3-Methyl-1-(pyridin-2-ylsulfonyl)piperazine hydrochloride

1-((2,4-dichlorophenyl)sulfonyl)piperazine hydrochloride

2-(3-Methylpiperazin-1-yl)-1-(thiophen-2-yl)ethanone hydrochloride

(2-Chloropyridin-4-yl)(piperazin-1-yl)methanone hydrochloride

methyl 2,6-dimethylpiperazine-1-carboxylate