4-(2-吡啶)-2-甲基-3-丁基-2-醇, 4-(2-Pyridyl)-2-methyl-3-butyn-2-ol

4-(3-吡啶基)丙酸, 3-(4-Pyridyl)propionic acid

3-吡啶基硫脲, N-(3-Pyridyl)thiourea

4-嘧啶甲醇, 4-Pyrimidinemethanol

焦棓酚, Pyrogallol

吡咯-2-甲酸, Pyrrole-2-carboxylic Acid

(S)-(-)-2-吡咯烷酮-5-甲酸, (S)-(-)-2-Pyrrolidinone-5-carboxylic acid

4-(1-吡咯烷基)吡啶, 4-(1-Pyrrolidinyl)pyridine

丙酮酸, Pyruvic Acid

D-(-)-奎尼酸, D-(-)-Quinic Acid

喹啉-3-甲醛, Quinoline-3-carboxaldehyde

喹喔啉, Quinoxaline

活性蓝4, Reactive Blue 4

氧化铼(VII), Rhenium(VII) oxide

罗丹宁, Rhodanine