1,4,7,10-tetrazacyclododecane 294-90-6 339652_ALDRICH 294-90-6(FREE BASE) AIDS-051704 AIDS051704 Cyclen IPS1 NSC629374(FREE BASE) 10045-25-7 (TETRAHYDROCHLORIDE SALT) MLS000069489 NSC629374 NCI60_009514 CHEBI:37391 [12]aneN4 5-26-11-00023 (Beilstein Handbook Reference) BRN 0606114 SMR000059056 NSC 629374 ST5306895 1,4,7,10-Tetraazacyclododecane