Ramon Eritja is a research professor at Institute for Advanced Chemistry of Catalonia (IQAC) of the Spanish High Research Council (CSIC). He holds a degree in Chemistry and in Pharmacy from University of Barcelona obtained in 1977 and 1982 respectively. He completed his PhD at University of Barcelona in 1983 in solid-phase peptide synthesis supervised by Prof. Ernest Giralt. Postdoctoral Fellow in Dr. Itakura’s (Beckman Research Institute at Hope, CA, USA, 1984-1988) and Dr. Caruthers’s (University of Colorado at Boulder, USA, 1988-1989) laboratories. He returned to University of Barcelona in 1989. He became Tenure Scientist at CSIC in Barcelona in 1990. Then, in 1994, he moved to EMBL, Heidelberg, Germany as Group Leader and responsible of DNA synthesis facility at EMBL. He returned to Barcelona as Research Professor at CSIC leading the Nucleic Acid Chemistry Group in 1999. He was an invited member of the IRB Barcelona (2006-2012) and director of institute (IQAC, 2012-2017). He is a member of the Networking Center on Bioengineering, Biomaterials and Nanomedicine of Spain (CIBER-BBN) since 2006 being responsible of the Nucleic Acid Chemistry Research Group. The Nucleic Acid Chemistry Research Group focuses on the preparation and evaluation of novel modified oligonucleotides with potential interest in diagnostic and therapeutic applications. With more than 40 years’ experience in Nucleic Acids Chemistry the group is well-known for their activities in oligonucleotide synthesis being selected for the presidency of the international society of nucleotides, nucleotides and nucleic acids (IS3NA). In addition the group supervises the Oligonucleotide Synthesis Platform (NANBIOSIS Unit 29).