Spacer 18 also known as HEG spacer (hexaethylene glycol) is a 18 atom spacer can be placed at 5', 3' or internally. These hydrophiolic PEG spacer can be inersted in the multiple additions when a longer spacer is required especially when coupling an enzyme or antibody to an oligonucleotide, where there is a need to add a hydrophilip spcaer such as this to optimize the coupling reaction. In addition, HEG spacer also act as a blocker to stop polymerase activity at the 3' terminus. Contact Bio-Synthesis for Spacer 18, HEG Spacer Modified Oligonucleotide Synthesis Services.
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-20°C To -70°C Oligonucleotides are stable in solution at 4°C for up to 2 weeks. Properly reconstituted material stored at -20°C should be stable for at least 6 months. Dried DNA (when kept at -20°C) in a nuclease-free environment should be stable for years.
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