BI-171 is a bifunctional silane possessing a reactive vinyl group and a hydrolysable inorganic methoxysilyl group. The dual nature of its reactivity allows it to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermo- plastics, thermosets or elastomers), thus functioning as adhesion promoter, crosslinker, and/or surface modifier. BI-171 may also be useful as a moisture scavenger in moisture cure systems where enchanced shelf-life is sought.