R 1370 (OTTO) Ruthenium(III) nitrosyl nitrate, solution Ru 1.5% w/v Cas 34513-98-9 - used in inorganic catalysis. R 1370 (OTTO) Ruthenium(III) nitrosyl nitrate, solution Ru 1.5% w/v Cas 34513-98-9 - used in petrochemical cracking and automotive catalysts.