CAS 9003-39-8 appears in our catalog under these names: Polyvinylpyrrolidone, M.W. 8,000 , Polyvinylpyrrolidone, average M.W. 58,000 , Polyvinylpyrrolidone, M.W. 1,300,000 , Polyvinylpyrrolidone, M.W. 10, , Polyvinylpyrrolidone, M.W. 360 . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 100g, 500g, 2500g, 50g, 250g, 1kg, 25g.