19103-02-7 1,3,4,6-Tetrachloro-3a,6a-diphenyl-2,3,3a,4,5,6a-hexahydroimidazo[4,5-d]imidazole-2,5-diimine 91648-75-8 Urea, N,N'-bis(hydroxymethyl)-, reaction products with [1,2-ethanediylbis(oxy)]bis[methanol], ethylene glycol, formaldehyde, glutaraldehyde and tetrahydro-1,3,4,6-tetrakis(hydroxymethyl)imidazo[4,5-d]imidazole-2,5(1H,3H)-dione