84329-58-8 1H,3H-Benzo[1,2-c:4,5-c]difuran-1,3,5,7-tetrone polymer with 5,5-carbonylbis[1,3-isobenzofurandione], 4,4-oxybis[benzenamine] and 3,3-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis[1-propanamine] 158879-84-6 Spiro[furan-2(5H),6'-[6H]indeno[4,5-c]furan]-1',5(3'H)-dione,3,3'a,4,4',5',5'a,7',8'-octahydro-4',7',8'-trihydroxy-4-(1-hydroxyethyl)-5'-methoxy-3',3',5'a-trimethyl-,[3'aS-[3'aa,4'a,5'a,5'ab,6'b[R*(R*)],7'b,8'a]]-