for the following products
N-(2-Aminoethyl)-3-aminopropyl-trimethoxysilane | N-beta-(Aminoethyl)-gamma-aminopropyltrimethoxysilane | N-[3-(Trimethoxysilyl)propyl]ethylenediamine | [3-(2-Aminoethyl)aminopropyl]trimethoxysilane and N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane