1-Aza-2,5-disilacyclopentane, 2,2,5,5-tetramethyl- 2,2,5,5-Tetramethyl-1-aza-2,5-disilacyclopentane 2,2,5,5-Tetramethyl-2,5-disilapyrrolidine 7418-19-1 EINECS 231-036-7