👉 Tert-Butyl-Dimethy[Silicon](4-MethylideneHex-5-YN-1-yl)Oxy Silane; 820964-74-7. 1420. tert-Butyl(dimethyl)[(4-methylidenehex-5-yn-1-yl)oxy]silane; 820964-74-7