主题词：Synthesis and biological activity; Various Chemistry Research Topics; Multicomponent Synthesis of Heterocycles; Analytical Chemistry and Chromatography; Computational Drug Discovery Methods; Analytical Methods in Pharmaceuticals; Synthesis and Characterization of Heterocyclic Compounds; Graph theory and applications; Chemistry and Chemical Engineering; Adsorption and biosorption for pollutant removal; Free Radicals and Antioxidants; Inorganic and Organometallic Chemistry; Synthesis of heterocyclic compounds; Phytochemicals and Antioxidant Activities; Metal complexes synthesis and properties; Electrochemical sensors and biosensors; Analytical Chemistry and Sensors; Advanced Chemical Sensor Technologies; Academic Writing and Publishing; Science, Research, and Medicine; Heavy metals in environment; Magnetic Properties and Synthesis of Ferrites; Extraction and Separation Processes; Enzyme-mediated dye degradation; Synthesis and Properties of Aromatic Compounds