吡啶-2,3-二甲酸酐, Pyridine-2,3-dicarboxylic anhydride

重铬酸吡啶鎓, Pyridinium Dichromate

3-(3-吡啶基)-L-丙氨酸, 3-(3-Pyridyl)-L-alanine

2-(3-吡啶基)苯并咪唑-6-羧酸, 2-(3-Pyridyl)benzimidazole-6-carboxylic acid

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-2-羧酸, Pyrimidine-2-carboxylic Acid

均苯四甲酸二酰亚胺, Pyromellitic Diimide

(R)-(+)-2-吡咯烷酮-5-羧酸, (R)-(+)-2-Pyrrolidinone-5-carboxylic acid

3-吡咯啉, 3-Pyrroline

D-(-)-奎尼酸, D-(-)-Quinic Acid