Previous reasearch reported that chloroform extract that was partitioned from etanol exctracts of R. mucronata stem bark had sitotoxic against Myeloma cells (Diastuti, 2008). This research was aimed to fractinate the chloroform extract of R. mucronata stem bark and cytotoxicity test againts Myeloma cells, then identification the cytotoxic compounds. The ethanol extracts of R. mucronata steam ba…