5-(3-吡啶基)-1H-四唑, 5-(3-Pyridyl)-1H-tetrazole

嘧啶-5-硼酸频哪酯, Pyrimidine-5-boronic acid pinacol ester

4(3H)-嘧啶酮, 4(3H)-Pyrimidinone

焦磷酰氯, Pyrophosphoryl Chloride

1-吡咯烷羰基二硫酸铵盐, 1-Pyrrolidinecarbodithioic Acid Ammonium Salt

4-(1-吡咯烷基羰基)苯硼酸, 4-(1-Pyrrolidinylcarbonyl)benzeneboronic acid

3-吡咯啉, 3-Pyrroline

丙酮腈, Pyruvonitrile

喹啉-8-硼酸, Quinoline-8-boronic acid

喹啉-8-甲醛, Quinoline-8-carboxaldehyde

对五联苯, p-Quinquephenyl

Rhein

硫化铼(IV), Rhenium(IV) sulfide

Rhodium,5% on alumina powder

溴化铑(III)水合物, Rhodium(III) bromide hydrate