Methods and compositions for making nucleoside phosphoramidites and nucleic acids, including mono-, di-, and polynucleotides, comprising a linker covalently attached to a levulinyl moiety are provided. A levulinyl-protected linking moiety affords an orthogonal approach to modifying a polynucleotide during or after solid phase synthesis with a molecule of interest, for example, a conjugate or a dye.

 
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< Metabolically Stable Alkoxyalkyl Esters of Antiviral or Antiproliferative Phosphonates, Nucleoside Phosphonates and Nucleoside Phosphates

> Methods and compositions for determining the sequence of nucleic acid molecules

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