API Anti Cancer drugs Applied Science Journals Electronic band structure Ferromagnetic PuP Formulation ILMU BEDAH, SISTEM Impurity profiling Polyphosphoric acid Reimer-Tiemann reaction Sources of Impurities Storage Structural phase transition Toxic a practical approach acid-catalysed rearrangement aluminium chloride applications automation information metallic reduction technologies trifluoroacetic acid zinc α β-Unsaturated ketones