You can contact Dr. Tapan Seal who works as a plant chemist in Botanical Survey of India. As suggested by Keerthi, I too feel that you should explain your experiment a little bit more.
Thanks, Actually i am isolating compounds from a vietnamese plant in order to purifie a single compound we undergo open column and sephadex and finally HPLC but unfortunaltly most of my compounds dont have uv spectra so i cant detect them by HPLC (PDA)