Abstract: Improved methods for synthesis of oligonucleotides and other phosphorus-linked oligomers are disclosed. The methods include the use of aromatic solvents, alkyl aromatic solvents, halogenated aromatic solvents, halogenated alkyl aromatic solvents, or aromatic ether solvents to achieve deprotection of protected hydroxyl groups.

Abstract: The present invention relates to methods for synthesizing an oligomeric compound on a solid support comprising contacting a solid support with a filling material to produce a mixture thereof; placing the mixture in a reaction vessel; and synthesizing the oligomeric compound. The present invention also relates to (a) reaction vessels for synthesizing oligomeric compounds comprising a solid support; and a filling material, (b) apparatuses for synthesizing oligomeric compounds comprising a reagent source, and a reaction vessel comprising a solid support; and a filling material, and (c) compositions comprising a solid support and a filling material mixed therewith.

Abstract: Improved methods for synthesis of oligonucleotides and other phosphorus-linked oligomers are disclosed. The methods include the use of aromatic solvents, alkyl aromatic solvents, halogenated aromatic solvents, halogenated alkyl aromatic solvents, or aromatic ether solvents to achieve deprotection of protected hydroxyl groups.

Abstract: The present invention discloses improved methods for oligonucleotide synthesis and purification. In the methods of the invention, a half-life is determined for deprotection of the 5′-OH protecting group at the 5′-terminus of an oligonucleotide post-synthesis. The half-life is used to determine an optimal reaction time for removal of the 5′-OH protecting group. The methods of the invention are amenable to the large-scale synthesis and purification of oligonucleotides.

Abstract: Methods and compounds useful for the purification of oligonucleotides and their analogs are provided wherein the oligonucleotides are contaminated with at least one oligonucleotide having at least one abasic site by the formation of imines at the aldehyde moiety of the abasic site and subsequent separation based on extractions, precipitations or chromatography.

Abstract: Methods and compounds useful for the purification of oligonucleotides and their analogs are provided wherein the oligonucleotides are contaminated with at least one oligonucleotide having at least one abasic site by the formation of imines at the aldehyde moiety of the abasic site and subsequent separation based on extractions, precipitations or chromatography.

Abstract: Compositions and methods for inhibition of desulfurization in oligonucleotides comprising one or more phosphorothioate linkages. Antioxidants which partition into the aqueous phase of bi-phasic or multi-phasic topical pharmaceutical formulations inhibit desulfurization of phosphorothioate oligonucleotides, resulting in enhanced oligonucleotide stability.

Abstract: The present invention relates to methods for synthesizing an oligomeric compound on a solid support comprising contacting a solid support with a filling material to produce a mixture thereof; placing the mixture in a reaction vessel; and synthesizing the oligomeric compound. The present invention also relates to (a) reaction vessels for synthesizing oligomeric compounds comprising a solid support; and a filling material, (b) apparatuses for synthesizing oligomeric compounds comprising a reagent source, and a reaction vessel comprising a solid support; and a filling material, and (c) compositions comprising a solid support and a filling material mixed therewith.

Abstract: The present invention discloses improved methods for oligonucleotide synthesis and purification. In the methods of the invention, a half-life is determined for deprotection of the 5′-OH protecting group at the 5′-terminus of an oligonucleotide post-synthesis. The half-life is used to determine an optimal reaction time for removal of the 5′-OH protecting group. The methods of the invention are amenable to the large-scale synthesis and purification of oligonucleotides.

Abstract: The present invention discloses improved methods for oligonucleotide synthesis and purification. In the methods of the invention, a half-life is determined for deprotection of the 5′-OH protecting group at the 5′-terminus of an oligonucleotide post-synthesis. The half-life is used to determine an optimal reaction time for removal of the 5′-OH protecting group. The methods of the invention are amenable to the large-scale synthesis and purification of oligonucleotides.