吡唑-3,5-二羧酸单水合物, 1H-Pyrazole-3,5-dicarboxylic acid monohydrate

芘, Pyrene

氢溴化吡啶, Pyridine Hydrobromide

4-Pyridineacetonitrile

吡啶-2-甲醛, Pyridine-2-carboxaldehyde

吡啶-3,4-二甲酰亚胺, Pyridine-3,4-dicarboximide

2,6-吡啶二甲醇, 2,6-Pyridinedimethanol

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