The Symposium programme covers all aspects and topics of chemistry of nucleic acid components (nucleobases, nucleosides, nucleotides, oligonucleotides and nucleic acids). The main themes will include organic synthesis, bioorganic chemistry, medicinal chemistry, physical chemistry and biophysics, biochemistry and chemical biology. The programme will consist of 15 invited plenary lectures, ca 40 selected contributing oral presentations (15-20') and a poster session. Both advanced and young scientists including advanced Ph.D students are encouraged to apply for oral presentations. Informal discussions are expected to continue through the evenings and nights with a glass of good beer or wine. The attendance is limited to 150 regular participants (excluding accompanying persons). English will be the official language of the conference.