Bis(trimethylsilyl)amine999-97-3100 % similar Lithium bis(trimethylsilyl)amide4039-32-175 % similar Hexamethylcyclotrisilazane1009-93-438 % similar 2,2,4,4,6,6,8,8-Octamethylcyclotetrasilazane1020-84-438 % similar N,O-Bis(trimethylsilyl)hydroxylamine22737-37-733 % similar