2',3'-dihydro-3H-2λ5-[2,2']spirobi(benzo[1,3,2]oxazaphosphole)
2,7-bis<(diethylamino)methyl>-2,7-diphenoxy-3,8-dioxa-1,6-diaza-2,7-diphospha-4,5:9,10-dibenzotricyclo<5.3.0.02,6>deca-4,9-diene
2,7-bis(2,4-dichlorophenoxy)-2,7-bis<(diethylamino)methyl>-3,8-dioxa-1,6-diaza-2,7-diphospha-4,5:9,10-dibenzotricyclo<5.3.0.02,6>deca-4,9-diene
2-(diethylamino)-2,3-dihydro-1,3,2-benzoxazaphosphole
diethyl <(diethylamino)methyl>phosphonate