3-(3-吡啶基)丙酸, 3-(3-Pyridyl)propionic Acid

N-(2-吡啶基)硫脲, N-(2-Pyridyl)thiourea

嘧啶-5-羧酸, Pyrimidine-5-carboxylic Acid

焦棓酸, Pyrogallol

吡咯-3-甲醛, Pyrrole-3-carboxaldehyde

(R)-(+)-2-吡咯烷酮-5-羧酸, (R)-(+)-2-Pyrrolidinone-5-carboxylic acid

2-吡咯烷基吡啶, 2-(2-Pyrrolidinyl)pyridine

3-(1-吡咯基)安息香酸, 3-(1-Pyrrolyl)benzoic acid

喹哪啶红, Quinaldine Red

喹啉-2-甲醛, Quinoline-2-carboxaldehyde

喹啉-8-磺酸, Quinoline-8-sulfonic acid

盐酸雷尼替丁, Ranitidine Hydrochloride

氧化铼(VI), Rhenium(VI) oxide

罗丹名 6G 高氯酸盐, Rhodamine 6G perchlorate

5% 铑负载于碳浆料, Rhodium,5% on activated carbon paste