496-46-8 AI3-08271 Acetylene carbamide Acetylenediurea Acetylenediureine Acetyleneurea Diurea glyoxalate EINECS 207-821-5 GLYCOURIL Glycoluril Glycoluril (8CI) Glyoxalbiuret Glyoxaldiureine Glyoxaldiurene Imidazo(4,5-d)imidazole-2,5(1H,3H)-dione, tetrahydro- NSC 2765 Perhydroimidazo(4,5-d)imidazole-2,5-dione Tetrahydroimidaz(d)imidazole-2,5(1H,3H)-dione