CAS 9003-54-7 appears in our catalog under these names: Poly(Styrene-co-acrylonitrile), average Mw ~165,000 by GPC, acrylonitrile 30 wt. %, Poly(styrene–co–acrylonitrile), POLY(STYRENE-CO-ACRYLONITRILE), 25 WT. &, POLY(STYRENE-CO-ACRYLONITRILE), 30 WT. &. Offered by: Chemat Brand, GLPBio, Sigma-Aldrich. Available pack sizes: on request, 500g, 100G.