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1-Boc-4-spiro-[3-(2-pyrrolidinone)] piperidine268550-48-750 % similar tert-Butyl 4-(3-ethoxy-3-oxopropanoyl)piperidine-1-carboxylate479630-08-550 % similar 1,1-Dimethylethyl 9-oxo-3-azaspiro[5.5]undecane-3-carboxylate873924-08-450 % similar 3-Oxo-1-oxa-8-aza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester954236-44-350 % similar 1-tert-Butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate141642-82-249 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-349 % similar 3-Ethoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl ester1002355-96-549 % similar tert-Butyl 3-(2-ethoxy-2-oxoethyl)azetidine-1-carboxylate158602-35-849 % similar tert-Butyl 4-cyano-4-methylpiperidine-1-carboxylate530115-96-949 % similar N-Boc-diethanolamine103898-11-949 % similar N-Boc-N,N-bis(2-chloroethyl)amine118753-70-149 % similar 1-Boc-4-methylpiperazine53788-49-149 % similar tert-Butyl piperazine-1-carboxylate57260-71-649 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-349 % similar tert-Butyl 2,7-diazaspiro(3.5)nonane-7-carboxylate hydrochloride1023301-84-948 % similar 2,8-Diaza-spiro[4.5]decane-8-carboxylic acid tert-butyl ester236406-39-648 % similar tert-Butyl 4-(aminomethyl)-4-hydroxypiperidine-1-carboxylate392331-66-748 % similar tert-Butyl 2-oxo-1,7-diazaspiro(3.5)nonane-7-carboxylate392331-78-148 % similar tert-Butyl 4-aminomethyl-4-fluoropiperidine-1-carboxylate620611-27-048 % similar 1-Boc-4-methylenepiperidine159635-49-148 % similar