2-(3-吡啶基)丙酸, 3-(2-Pyridyl)propionic acid

2-(4-吡啶基)噻唑-4-羧酸, 2-(4-Pyridyl)thiazole-4-carboxylic acid

嘧啶-2-羧酸, Pyrimidine-2-carboxylic Acid

黄铁矿, Pyrite

吡咯-2-甲醛, Pyrrole-2-carboxaldehyde

(+/-)-2-吡咯烷酮-5-甲酸, (±)-2-Pyrrolidinone-5-carboxylic acid

2-(1-吡咯烷基)苯酚, 2-(1-Pyrrolidinyl)phenol

1-(2-羰基苯)吡咯, 2-(1-Pyrrolyl)benzoic acid

喹哪啶酸, Quinaldic Acid

喹啉-2-甲腈, Quinoline-2-carbonitrile

喹啉-5-羧酸, Quinoline-5-carboxylic acid

Radglo GM-10 Chartreuse

氯化铼(V), Rhenium(V) chloride

Rhodamine 6G

铑碳, Rhodium,5% on carbon