乙酰丙酮铑(III) Premion®, Rhodium(III) 2,4-pentanedionate

松香, Rosin

氯化铷, Rubidium Chloride

硝酸铷, Rubidium nitrate

钌, Ruthenium

氯化钌(III), Ruthenium(III) chloride

亚硝酰硝酸钌(III), Ruthenium(III) nitrosylnitrate

钌(III) 2,4-戊二酮, Ruthenium(III) 2,4-pentanedionate

水杨醛肟, Salicylaldoxime

水合乙酸钐, Samarium(III) acetate hydrate