A pioneer in the field of organic chemistry, Clara Y. Lim-Sylianco was responsible for contributing greatly to the world of knowledge about mutagens, anti-mutagens, and other reactions that are related to bioorganic issues. This research that was conducted primarily at the University of the Philippines helped earn her laboratory the distinction of becoming an international training center. This was bestowed upon it by the Research Planning in Biological Sciences, in Washington DC, in 1986. The laboratory was authorized to detect chemical mutagens, and to help aid in the training of others to detect these same mutagens out in the field.
In 1989, Clara Y. Lim-Sylianco was also appointed as a member of the International Advisory Committee on Anti-mutagens. During her illustrious career, she has managed to publish seven books and five monographs that cover a variety of topics that she has researched. That includes publications that address genetic toxicology, molecular nutrition, biochemistry, and organic chemistry, among other topics of interest. She is considered to be one of the leaders in this field, and is looked upon by the international community as an important source of knowledge and worthwhile researcher. Her publications are used as textbooks in universities throughout the Philippines and further abroad.
For her work, Clara Y. Lim-Sylianco was awarded a number of different awards and positions of significance. These include but are not limited to her appointment as an Elected Academician by the NAST in 1980, the Outstanding Faculty award by the University of the Philippines in 1985, and the CASAA Award of Distinction in Biochemistry in 1985. She also was a Fellow at the Royal Society of Chemistry in London, and the New York Academy of Sciences. This international experience has helped shape her work into organic chemistry and mutagens.
Within the Philippines, Clara Y. Lim-Sylianco contributed a great deal of knowledge to the research of native plants and their chemical makeup. She worked on a paper regarding the determination of oxalates and calcium in plants native to the Philippines, riboflavin levels, tryptophan, and the antimutagenic effects of vitamins on different parts of the body. These research results were published and compiled in many cases into organic chemistry textbooks for the public or students to take note of. To make notice of all this work, she was confirmed as a National Scientist of the Philippines in 1994, which is the highest honor that can be bestowed upon a working scientist by the President.