CAS 24991-53-5 appears in our catalog under these names: Polyoxyethylene bis(amine), M.W. 1,000 , Polyoxyethylene bis(amine), M.W. 8,000 , Polyoxyethylene bis(amine), M.W. 3,400 . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1g, 5g, 250mg.