August 18, 1925: Clara Y. Lim-Sylianco was born in Guihulngan, Negros Oriental

Clara Y. Lim-Sylianco was a pioneering Filipino chemist and educator whose groundbreaking work in biochemistry and organic chemistry earned her the prestigious title of National Scientist of the Philippines in 1994. Her extensive research on mutagens, antimutagens, and bioorganic mechanisms, coupled with her dedication to chemical education, left an indelible mark on science in the Philippines and beyond.