1-Boc-4-iodomethylpiperidine , its cas register number is 145508-94-7. It also can be called 1-Piperidinecarboxylicacid, 4-(iodomethyl)-, 1,1-dimethylethyl ester ; 1,1-Dimethylethyl4-(iodomethyl)-1-piperidinecarboxylate .