CPV code 14723000 designates Scandium in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
14723000 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 14720000 (Aluminium, nickel, scandium, titanium and vanadium).