Natural Porphyrinoid Pigments Symposium at the 12th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-12), Madrid (Spain), July 2022
Natural Porphyrinoid Pigments Symposium at the 11th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-11), Virtual meeting, June-July 2021
Natural Porphyrinoid Pigments Symposium at the 10th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-10), Munich (Germany), July 2018
Natural Porphyrinoid Pigments – Structure, Function and Synthesis Symposium at the 9th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-9), Nanjing (China), July 2016
Natural Porphyrinoid Pigments – Structure, Function and Synthesis Symposium at the 8th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-8), Istanbul (Turkey), June 2014
Natural Porphyrinoid Pigments – Structure, Function and Synthesis Symposium at the 7th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-7), Jeju-Island (South Korea), July 2012)
Natural Porphyrinoid Pigments – Structure, Function and Synthesis Symposium at the 6th Intl. Conf. Porphyrins and Phthalocyanines (ICPP-6), New Mexico (USA), July 2010
Gordon Research Conference on Vitamin B12 and Corphins University of Oxford, UK, August 2009 (chairman)
Gordon Research Conference on Vitamin B12 and Corphins University of New England, Biddeford, USA, July 2007 (vice chairman)
41th EUCHEM Conference on Stereochemistry Bürgenstock, Switzerland, May 2006 (president)
40th EUCHEM Conference on Stereochemistry Bürgenstock, Switzerland, May 2005 (vice president)
9. Österreichische Chemietage Innsbruck, September 2000 (president and chairman)
5th European Symposium on Vitamin B12 and B12-Proteins Marburg (Germany), September 2000 (co-chairman)
34th European Symposium on Bioorganic Chemistry Chemistry and Chemical Biology of Oligonucleotides, May 2000 (chairman)
33rd European Symposium on Bioorganic Chemistry May 1999 (vice chairman)
4th European Symposium on Vitamin B12 and B12-Proteins Innsbruck, September 1996 (chairman)
Igler MS Tage, Perspectives in Analytical and Biostructural Mass Spectrometry Igls (Innsbruck), Obergurgl, 1995, 1997, 1999, 2001, 2003, 2005, 2007, 2009 (chairman)
Igler NMR Tage, Perspectives in Biostructural NMR-Spectroscopy Igls (Innsbruck), Obergurgl, 1994, 1996, 1998, 2000, 2002, 2004, 2006 (chairman)
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