| http://www.w3.org/ns/prov#value | - The nucleoside phosphoroamidite is represented in accordance with one aspect of the present invention by the following formula: wherein the base is adenine, guanine, thymine, or cytosine, R1 is a protecting group which makes the 5??? hydroxyl group unavailable for reaction and includes dimethoxytrityl, tert-butyloxycarbonyl or any of the protecting groups known to those of skill in the art; R2 is
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