吡咯-2-甲酸, Pyrrole-2-carboxylic Acid

4-(3-吡咯烷基)吗啉, 4-(3-Pyrrolidinyl)morpholine

丙酮醛, Pyruvic aldehyde

喹啉-2-甲腈, Quinoline-2-carbonitrile

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

氧化铼(VI), Rhenium(VI) oxide

Rhodium,5% on alumina powder

无水氯化铑(III), Rhodium(III) chloride

孟加拉玫瑰红, Rose Bengal

甲酸铷水合物, Rubidium formate hydrate