CAS 12036-21-4 appears in our catalog under these names: Vanadium(iv) oxide, 95%, Vanadium (IV) oxide, 99 %, Vanadium(IV) oxide/ 98+%, Vanadium(IV) oxide/ 99.5%, Vanadium(IV) oxide, 99% (metals basis) . Offered by: Combi-blocks, Chemat Brand, Chemat, Thermo Scientific (Alfa Aesar), TCI. Available pack sizes: 10g, 50g, on request, 25g, 100g, 500g, 5g, 20G.