Biologically active natural products are of great importance for both basic research and for research and development in the pharmaceutical and agrochemical industries. The annual symposium, established for over three decades, provides valuable insights into current developments and serves as a key event for interdisciplinary exchange of experience. The core topics of the following Irsee Natural Product Symposium 2025 are Syntheses Applied NP research Biosynthesis & Chemo-enzymatic approaches Meet Karsten Siems in Irsee!