More than 10 years ago, Eurogentec developed a new purification technique based on a proprietary chromatography system, resulting in equivalent performances as those obtained using HPLC. This method allows the production of purified oligonucleotides in the same time frame as for unpurified ones. These purified oligonucleotides, known as OliGold®, have therefore rapidly become the high-quality standard of our oligo catalogue. Logically, most of our modified oligonucleotides are now built on our OliGold® backbone