喹喔啉-2-羧酸, Quinoxaline-2-carboxylic acid

氯化铼(V), Rhenium(V) chloride

铑,1%负载于氧化铝粉, Rhodium,1% on alumina powder

氯化铑(III)水合物, Rhodium(III) chloride hydrate

核黄素-5'-磷酸钠二水合物, Riboflavin-5'-phosphate sodium salt dihydrate

氯化铷, Rubidium Chloride

钌, Ruthenium

亚硝酰乙酸钌(III), Ruthenium(III) nitrosylacetate

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

水杨酸, Salicylic Acid