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4-(4-Aminophenyl)piperazine-1-carboxylic acid tert-butyl ester170911-92-937 % similar (R)-3-Hydroxymethyl-piperazine-1-carboxylic acid tert-butyl ester278788-66-237 % similar 4-N-Boc-2-hydroxymethylpiperazine301673-16-537 % similar 1,1-Dimethylethyl (3S)-3-(hydroxymethyl)-1-piperazinecarboxylate314741-40-737 % similar 1,1-Dimethylethyl (2S)-2-(aminocarbonyl)-1-pyrrolidinecarboxylate35150-07-337 % similar tert-Butyl 4-(4-bromophenyl)piperazine-1-carboxylate352437-09-337 % similar Benzyl (5r)-5-methyl-1,4-diazepane-1-carboxylate1001401-60-037 % similar Boc-L-homophenylalanine100564-78-137 % similar Boc-ala-obzl51814-54-137 % similar N-Boc-(S)-2-amino-3-benzyloxy-1-propanol79069-15-137 % similar Boc-D-homophenylalanine82732-07-837 % similar N-Boc-nortropinone185099-67-637 % similar N-[(1,1-Dimethylethoxy)carbonyl]-L-phenylalanyl-L-phenylalanine13122-90-237 % similar tert-Butyl 3-methylpiperazine-1-carboxylate120737-59-936 % similar (S)-4-N-Boc-2-methylpiperazine147081-29-636 % similar (R)-4-Boc-2-methylpiperazine163765-44-436 % similar tert-Butyl 2-methyl-4-oxopiperidine-1-carboxylate190906-92-436 % similar Boc-tyr-obzl19391-35-636 % similar 1,1-Dimethylethyl 5-oxo-2-azabicyclo[2.2.1]heptane-2-carboxylate198835-06-236 % similar O-Benzyl-N-((tert-butoxy)carbonyl)-L-tyrosine2130-96-336 % similar