CAS 25189-00-9 appears in our catalog under these names: Poly(t-butyl methacrylate), Poly(t-butyl methacrylate) Standard (Mw 140,000) , Poly(t-butyl methacrylate) Standard (Mw 180,000), Poly(t-butyl methacrylate) Standard (Mw 200,000), Poly(t-butyl methacrylate) Standard (Mw 300,000) . Offered by: Hubei YoungXin. Available pack sizes: 10mg, 25mg, 50mg, 100mg, 200mg.