Abstract A novel coumarin derivative has been isolated from the dichloromethylene fraction of the aerial part of the Sida rhombifolia. The structure of the isolated compound has been established as 7-hydroxy-6-methoxy coumarin based on the spectral (UV, IR, 1HNMR, 13CNMR, mass) data.
Keywords Sida rhombifolia, Malvaceae, 7-hydroxy-6-methoxycoumarin.