1,1'-(1,3,5,7-Tetraazabicyclo(3.3.1)nonane-3,7-diyl)diethanone 1,3,5,7-Tetraazabicyclo(3.3.1)nonane, 3,7-diacetyl- 3,7-Diacetyl-1,3,5,7-tetraazabicyclo(3.3.1)nonane 32516-05-5 61733-12-8 DAPT (VAN) EINECS 251-077-4 NSC 281710