吡啶-2-硫代酰胺, Pyridine-2-thiocarboxamide

吡哆醛盐酸盐, Pyridoxal Hydrochloride

1-(2-联氮吡啶)-2-萘酚, 1-(2-Pyridylazo)-2-naphthol

2-(2-吡啶基)苯并咪唑, 2-(2-Pyridyl)benzimidazole

N-(4-吡啶甲基)乙胺, N-(4-Pyridylmethyl)ethylamine

3-(2-吡啶)-5-(4-吡啶)-1,2,4-三唑, 3-(2-Pyridyl)-5-(4-pyridyl)-1,2,4-triazole

嘧啶, Pyrimidine

嘧啶-2-硫代甲酰胺, Pyrimidine-2-thiocarboxamide

均苯四甲酸, Pyromellitic Acid

吡咯-3-羧酸, Pyrrole-3-carboxylic Acid