3,4,5-三羟基苯甲酸正丙酯, n-Propyl 3,4,5-trihydroxybenzoate

PTFE sheet

吡嗪, Pyrazine

1H-吡唑, 1H-Pyrazole

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

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