Eurogentec has developed an ultrahigh quality process to provide the best oligos from 8 to 140 bases long. This process relies on a proprietary synthesis and purification process combining a synthesis on polystyrene support, special amidites, optimised deprotection and double purification. This latter step is adapted based on the length and, if necessary, on the structure of the oligonucleotide.

Some of your applications may require oligos of the highest quality. Cristallography studies, tri-dimensional construction, difficult cloning or gene synthesis are among these demanding applications.
The quality of the synthesis, the deprotection efficiency and the purification level are the most critical points to consider in order to reach the highest purity grade.
 

The UltraPureGold™ purification has been developed to provide the best oligonucleotides from 8 to 140 bases long with an ultrahigh quality. This process relies on a proprietary synthesis and purification process combining a synthesis on polystyrene support, special amidites, optimised deprotection and dual purification. This latter step is adapted based on the length and, if necessary, on the structure of the oligonucleotide.

For unmodified oligonucleotides up to 26 bases long, a dual HPLC provides the best quality to reach 95 % purity. For longer oligonucleotides between 26 and 140 bases, a specific purification process is applied. Firstly, a Reverse-Phase cartridge purification eliminates most of the aborted sequences. Secondly “long PAGE” purification separates precisely the full-length oligonucleotide from the remaining n-x by-products. Finally, a gel filtration is realized to remove all the residual purification reagents. If required, an additional round of purification is performed in order to reach a purity level up to 85% for oligonucleotides between 26 and 59 bases long or 80 % purity for oligonucleotides longer than 60 bases. 

This UltraPureGold™ process has been co-developed with some customers and validated for many stringent applications. These purification steps are demanding on the final yield, therefore we cannot guarantee large final amounts of oligonucleotides. This is the best process available on the market providing very high quality oligonucleotides for the most demanding applications.


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