hexa-tert-butyl 11,11'-((2-iodo-1,4-phenylene)bis(methylene))bis(1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate); CAS No.: 3037676-25-5. ChemShuttle offers Building Blocks like hexa-tert-butyl 11,11'-((2-iodo-1,4-phenylene)bis(methylene))bis(1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate).