What are the main uses of Ruthenium (CAS: 7440-18-8)?

Ruthenium is primarily used in industrial applications such as electronics (e.g., hard disk drives), catalysis in chemical reactions, and as a component in high-performance alloys. It also finds use in jewelry as a white metal and in pharmaceuticals for certain catalysts. Additionally, ruthenium compounds are explored in cancer treatment research. CAS number 7440-18-8 identifies this element in scientific databases.