1,3,4,6-Tetrakis(butoxymethyl)tetrahydroimidazo(4,5-d)imidazole-2,5(1H,3H)-dione 15968-37-3 EINECS 240-108-7 Imidazo(4,5-d)imidazole-2,5(1H,3H)-dione, 1,3,4,6-tetrakis(butoxymethyl)tetrahydro-