1. Anti-bacterial Activity of Prenylated Xanthone from The Bark of Garcinia lowa 2. Solid-phase Synthesis of Tetrapeptide on 2-Chlorotrityl Chloride Resin by Using Benzotriazol-1-yl-oxytripyrrolidinophosphonium Hexafluorophosphate as Coupling Reagent 3. Synthesis, Spectral, Anticancer Studies on Cu (II) Complex of 2,4,5-Triphenyl-1H-Imidazole 4. Analisis Karaterisasi Konsentrasi dan Komposis…