3-.Alpha.-(dimethylamino)-trans-2,4-dioxa-3-.beta.-oxo- {3-phosphabicyclo[4.3.0]nonane} 3.Beta.-(dimethylamino)-trans-2,4-dioxa-3.alpha.-oxo-3-phos {phabicyclo[4.3.0]nonane} mixture (83:17) with 3.alpha.- (dimethylamino)-trans-2,4-dioxa-3.beta.-oxo-3-phosphabicyclo {[4.3.0]nonane} AIDS-160463 AIDS160463 N,N-Dimethyl-N-(2-oxidohexahydrocyclopenta[d][1,3,2]dioxaphosphinin-2-yl)amine N,N-Dimethylhexahydrocyclopenta[d][1,3,2]dioxaphosphinin-2-amine 2-oxide NSC630693 NSC630694