Dr. John Hurtado Belalcazar. Master and doctor in inorganic chemistry from the Pontifical Catholic University of Chile. Senior Researcher at the Ministry of Science of Colombia with experience in the synthesis and characterization of complexes with biological activity and homogeneous catalysis. International internship: organisch-chemisches institut, westfälische wilhelms-universität. Müenster-Germany. He has over 15 years of experience as a university professor and more than 75 articles in scientific journals. Tutor of 5 doctoral theses, 12 master's degrees, 24 postgraduate programs for chemists. Associate professor in the Department of Chemistry at the University of Los Andes and director of the inorganic chemistry, catalysis, and bioinorganic chemistry research group at the Department of Chemistry.