| Potassium carbonate | 584-08-7 |
| Potassium dichromate | 7778-50-9 |
| Potassium glycerophosphate | 1319-69-3 |
| Potassium hydrogen DL-aspartate | 923-09-1 |
| Potassium iodate | 7758-05-6 |
| Potassium lactate | 996-31-6 |
| Potassium metabisulfite | 16731-55-8 |
| Potassium nitrate | 7757-79-1 |
| Potassium perchlorate | 7778-74-7 |
| Potassium persulfate | 7722-21-1 |
| Potassium phosphate, dibasic, trihydrate | 16788-57-1 |
| Potassium sodium hydrogen citrate | 55049-48-4 |
| Potassium sulfate | 7778-80-5 |
| Potassium triiodide | 12298-68-9 |
| Pozanicline | 161417-03-4 |
| Pozelimab | 2096328-94-6 |
| Poziotinib | 1092364-38-9 |
| Pracinostat | 929016-96-6 |
| Praconase | 1186547-12-5 |
| Practolol | 6673-35-4 |
| Pradefovir | 625095-60-5 |
| Pradefovir Mesylate | |
| Prademagene zamikeracel | 2088280-15-1 |
| Pradigastat | 956136-95-1 |
| Pradofloxacin | 195532-12-8 |
| Prajmaline | 35080-11-6 |
| Praliciguat | 1628730-49-3 |
| Pralmorelin | 158861-67-7 |
| Pralnacasan | 192755-52-5 |
| Pralsetinib | 2097132-94-8 |
| Pramiconazole | 219923-85-0 |
| Prasinezumab | 1960462-19-4 |
| Prasterone enantate | 23983-43-9 |
| Pravibismane | 175880-68-9 |
| Prednimustine | 29069-24-7 |
| Prednisolone caproate | 69164-69-8 |
| Prednisolone phosphate | 302-25-0 |
| Prednisolone tebutate | 7681-14-3 |
| Prednisone acetate | 125-10-0 |
| Prednylidene | 599-33-7 |