| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | pyridine | chemistry community | Pyridine is a common solvent and reagent in chemical laboratories, often used in the synthesis of pharmaceuticals and agrochemicals. | 1 |
| 2 | pyrimidine | chemistry | A fundamental component of DNA and RNA molecules | 1 |
| 3 | pyrimidine | chemistry | Pyrimidines are essential building blocks of DNA and RNA, and are extensively studied in biology and chemistry. | 1 |
| 4 | pyrimidine | chemistry | Pyrimidines are an essential component of nucleic acids such as DNA and RNA. | 1 |
| 5 | pyrophosphoric acid | chemistry community | Known as a derivative of phosphoric acid with unique chemical properties and applications in chemical synthesis. | 1 |
| 6 | pyrophosphoric acid | chemistry community | Recognized as a chemical compound with the formula H4P2O7 | 1 |