Dr. Clara Lim-Sylianco was known on her works on mutagens, anti mutagens, and bioorganic mechanisms. She also authored schoolbooks that are still makes use in schools nowadays.
She received the Gregorio Y. Zara award in 1979; she also served as the UP Endowment Professorial Chair in chemistry from 1974-1977, and was a Fellow of the Royal Society in 1958.