3-吡咯啉, 3-Pyrroline

喹哪啶酸, Quinaldic Acid

喹啉-3-甲醛, Quinoline-3-carboxaldehyde

6-喹喔啉羧酸, Quinoxaline-6-carboxylic acid

氯化铼(III), Rhenium(III) chloride

罗丹名 6G 高氯酸盐, Rhodamine 6G perchlorate

乙酸铑(II)二聚物, Rhodium(II) acetate

氧化铑(III)五水合物, Rhodium(III) oxide pentahydrate

松香, Rosin

氯化铷, Rubidium Chloride

红荧烯, Rubrene

氯化钌(III)水合物, Ruthenium(III) Chloride Hydrate

亚硝酰硫酸钌(III), Ruthenium(III) nitrosylsulfate

沙丁胺醇硫酸盐, Salbutamol hemisulfate

亚水杨基苯胺, Salicylideneaniline