I am a Professor of Chemistry at the University of Nairobi, Kenya. I have an extensive experience in teaching of Organic Chemistry and conducting research in the field of Natural Products Chemistry. For the last thirty years, I have been involved in the investigation of Eastern African plants for bioactive natural products. This has resulted in the publication of 90 articles in peer reviewed journals (h-index of 30, H-10 index of 77, Citations 2453 in Google Scholar, as of 13th Jan 2020). I have also co-authored three books on medicinal plants of East Africa.