1,3,2,4-Diazadiphosphetidine, 2,4-dianilino-1,3-diphenyl- (8CI) 1,3,2,4-Diazadiphosphetidine-2,4-diamine, N,N',1,3-tetraphenyl- 1,3,2,4-Diazaphosphetidine, 2,4-dianilino-1,3-diphenyl- (7CI) 18440-21-6 3-12-00-01126 (Beilstein Handbook Reference) BRN 2823276 N,N',1,3-Tetraphenyl-1,3,2,4-diazadiphosphetidine-2,4-diamine VTS 1