丙酮醛, Pyruvic aldehyde

喹啉-8-硼酸, Quinoline-8-boronic acid

喹啉-5-羧酸, Quinoline-5-carboxylic acid

活性蓝4, Reactive Blue 4

氧化铼(VII), Rhenium(VII) oxide

Rhodium,5% on alumina powder

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

玫瑰红酸二钠盐, Rhodizonic Acid Disodium Salt

碳酸铷, Rubidium carbonate

硝酸铷, Rubidium nitrate

钌,5%负载于活性碳粉末, Ruthenium,5% on activated carbon powder

亚硝酰氯化钌(III)水合物, Ruthenium(III) nitrosylchloride hydrate

氧化钌(IV), Ruthenium(IV) oxide

水杨酰胺, Salicylamide

氯化钐水合物, Samarium(III) chloride hydrate