CAS 2370-88-9 appears in our catalog under these names: 2,4,6,8–Tetramethylcyclotetrasiloxane, 2,4,6,8-Tetramethylcyclotetrasiloxane, 99% , 2,4,6,8-Tetramethylcyclotetrasiloxane, >95.0%(GC), 2,4,6,8-Tetramethylcyclotetrasiloxane 98%, 2,4,6,8-TETRAMETHYLCYCLOTETRASILOXANE, &. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), TCI, Ambeed, Sigma-Aldrich. Available pack sizes: 100g, 500g, 5g, 25g, 100ML, 25ML.