p. 8999 - 9005
(1993)p. 643 - 647
(2007/10/02)p. 3199 - 3201
(2007/10/02)p. 3710 - 3717
(2007/10/02)benzil
3a,6a-diphenylglycoluril
1,3,4,6-Tetrakis(acetoxymethyl)tetrahydro-3a,6a-diphenylimidazo<4,5-d>imidazole-2,5(1H,3H)-dione
1,6:3,4-bis(2-oxapropylene)tetrahydro-3a,6a-diphenylimidazo[4,5-d]imidazole-2,5(1H,3H)-dione
1,3,4,6-tatrakis(hydroxymethyl)tetrahydro-3a,6a-diphenylimidazo<4,5-d>imidazole-2,5(1H,3H)-dione