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1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-4100 % similar tert-Butyl 7-oxo-2-azaspiro[3.5]nonane-2-carboxylate1363381-22-974 % similar tert-Butyl 2-oxo-7-azaspiro[3.5]nonane-7-carboxylate203661-69-274 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-373 % similar tert-Butyl 3,9-diazaspiro[5.5]undecane-3-carboxylate173405-78-268 % similar 7-Boc-2-oxa-7-azaspiro[3.5]nonane240401-27-867 % similar tert-Butyl 2-oxo-6-azaspiro[3.4]octane-6-carboxylate203661-71-666 % similar N-Boc-hexahydro-1H-azepin-4-one188975-88-465 % similar tert-Butyl 2,7-diazaspiro[3.5]nonane-7-carboxylate896464-16-765 % similar tert-Butyl 2,7-diazaspiro(3.5)nonane-7-carboxylate hydrochloride1023301-84-960 % similar 2,8-Diaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester236406-39-660 % similar 3-Oxopyrrolidine-1-carboxylic acid tert-butyl ester101385-93-759 % similar tert-Butyl 4,4-difluoropiperidine-1-carboxylate281652-10-659 % similar 1,1-Dimethylethyl 1-pyrrolidinecarboxylate86953-79-959 % similar 3-Oxo-1-oxa-8-aza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester954236-44-359 % similar tert-Butyl 1-oxa-6-azaspiro(2.5)octane-6-carboxylate147804-30-658 % similar 1-Boc-4-methyl-piperidin-4-OL406235-30-158 % similar tert-Butyl 2,6-diazaspiro(3.4)octane-6-carboxylate885270-86-057 % similar tert-Butyl 2,9-diazaspiro(5.5)undecane-9-carboxylate1023595-19-857 % similar 7-Boc-7-azaspiro[3.5]nonane-2-methanol1356476-27-157 % similar