CE-β-Elimination in Oligonucleotide Synthesis

Diethylamine-based CE-β-elimination is a selective strategy to remove the cyanoethyl protecting group from phosphate linkages during oligonucleotide synthesis. emp BIOTECH’s 20% diethylamine in acetonitrile minimizes the risk of undesired N3-alkylation of thymidine residues, a common side reaction triggered by acrylonitrile. This clean β-elimination step can be integrated into workflows prior to standard cleavage protocols, enabling improved purity and downstream compatibility for DNA and RNA synthesis.