CAS 12036-10-1 appears in our catalog under these names: Ruthenium(IV) oxide, anhydrous, 99.9% , Ruthenium(IV) oxide, Electronic Grade, Premion|r, 99.95% (me, Ruthenium(IV) oxide, anhydrous, Premion|r, 99.95% (metals ba. Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1g, 5g, 25g, 0.5g, 2g, 10g.