Study on the analysis of biologically active compounds.
Study on the biologically active natural products.
Study on the ginseng, its chemistry, biology, and
processing.

1983~1987 Reseach Assistant, Seoul National University
1987~1988 Visiting Scientist, Suntory Institute for
Bioorganic Research, Japan
1988~present Professor, College of Pharmacy, Seoul
National University
1995~1997 Chairman, Department of Pharmacy, Seoul
National University
2000~present CSO, Ginseng Science Inc.

1993 Award for the advancement of Science,
The Pharmaceutical Society of Korea
1997 Award for Excellent Research Paper (KOFST)
2002 Commissioner's Award, Korean Intellectual Property
Office
2002 Korea Invention Fair, Gold Award
2003 Presidential Citation
2003 Academic Excellence prize, The Korean Society of
Ginseng