CAS 898233-56-2 appears in our catalog under these names: Poly[[2,2'-biselenophene]-5,5'-diyl(9,9-dioctyl-9H-fluorene-2,7-diyl)], , Poly({9,9-dioctylfluorenyl-2,7-diyl}-co-{1,4-(2,5-dimethoxy)benzene}) end capped with dimethylphenyl. Offered by: Lumtec. Available pack sizes: 0.5g, 1g, On request.