| | 1,1',3,3'-TETRAMETHYL-5,5'-BIPYRIMIDINE-2,2',4,4'(1H,1'H,3H,3'H)-TETRONE CAS:7033-42-3 1,1',3,3'-TETRAMETHYL[4,5'-BIPYRIMIDINE]-2,2',4',6(1H,1'H,3H,3'H)-TETRONE CAS:62880-87-9 1,1'-(1,1,2,2,3,3-HEXAFLUORO-1,3-PROPANEDIYL)BIS(2,3,4,5,6-PENTAFLUOROBENZENE) CAS:25078-75-5 |