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4-Carboxymethyl-2-methyl-piperazine-1-carboxylic acid benzyl ester

4-Carboxymethyl-3-methyl-piperazine-1-carboxylic acid benzyl ester

(4-Acetyl-3-methyl-piperazin-1-yl)-acetic acid

(4-Acetyl-2-methyl-piperazin-1-yl)-acetic acid

(3,4-Dimethyl-piperazin-1-yl)-acetic acid

(2,4-Dimethyl-piperazin-1-yl)-acetic acid

4-(2-Hydroxy-ethyl)-[1,4]diazepane-1-carboxylic acid benzyl ester

4-(2-Amino-ethyl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester

4-(2-Amino-ethyl)-[1,4]diazepane-1-carboxylic acid benzyl ester

4-(2-Chloro-acetyl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester

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