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tert-Butyl 2,7-diazaspiro[3.5]nonane-7-carboxylate896464-16-7100 % similar tert-Butyl 2,7-diazaspiro(3.5)nonane-7-carboxylate hydrochloride1023301-84-991 % similar tert-Butyl 2,6-diazaspiro(3.4)octane-6-carboxylate885270-86-082 % similar 2,8-Diaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester236406-39-680 % similar tert-Butyl 2,9-diazaspiro(5.5)undecane-9-carboxylate1023595-19-876 % similar tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-274 % similar 2,7-Diaza-spiro[4.4]nonane-2-carboxylic acid tert-butyl ester236406-49-871 % similar 1,1-Dimethylethyl 2,6-diazaspiro[3.3]heptane-2-carboxylate1041026-70-371 % similar 1,1-Dimethylethyl 2-oxa-7-azaspiro[3.5]nonane-7-carboxylate240401-27-869 % similar tert-Butyl 2-oxo-7-azaspiro[3.5]nonane-7-carboxylate203661-69-267 % similar tert-Butyl 2,8-diazaspiro[4.5]decane-2-carboxylate336191-17-466 % similar 1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-465 % similar N-Boc-piperazine57260-71-665 % similar tert-Butyl 2,6-diazaspiro[3.4]octane-2-carboxylate885270-84-863 % similar tert-Butyl 4,4-difluoropiperidine-1-carboxylate281652-10-661 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-961 % similar tert-Butyl 2,6-Diazaspiro(3.3)heptane-2-carboxylate Hemioxalate1041026-71-460 % similar tert-Butyl 1-oxa-6-azaspiro(2.5)octane-6-carboxylate147804-30-659 % similar 1-Boc-4-methyl-piperidin-4-OL406235-30-159 % similar tert-Butyl 2-oxo-6-azaspiro[3.4]octane-6-carboxylate203661-71-659 % similar