G.C.L. EeC.M. LimC.K. LimM. RahmaniK. ShaariC.F.J. Bong2024-12-242024-12-242009-10-1510.1080/14786410902757998https://dspace-cris.utar.edu.my/handle/123456789/7704Alkaloids from <i>Piper sarmentosum</i> and <i>Piper nigrum</i>journal-article