| PF-06821497 | 1844849-10-0 | Anticancer drugs | 0 |
| PF-4136309 | 1341224-83-6 | | 0 |
| Peretinoin | 81485-25-8 | | 0 |
| Perflenapent | 678-26-2 | Contrast Media | 0 |
| Perflexane | 355-42-0 | Diagnostic agents | 0 |
| Perflubron emulsion | | | 0 |
| Perflubutane | 355-25-9 | Contrast Media | 0 |
| Perfluoro tert-butylcyclohexane | 84808-64-0 | | 0 |
| Perfluorodecalin | 306-94-5 | Dermatological Agents | 0 |
| Perfluorohexyloctane | 133331-77-8 | Ophthalmic Agents | 0 |
| Perfluorooctane | 307-34-6 | | 0 |
| Perflutren | 76-19-7 | | 0 |
| Perfosfamide | 62435-42-1 | | 0 |
| Peridinin | 33281-81-1 | | 0 |
| Perifosine | 157716-52-4 | Anticancer drugs | 0 |
| Perillyl alcohol | 18457-55-1 | Antineoplastics | 0 |
| Perindoprilat | 95153-31-4 | Enzyme Replacements/modifiers | 0 |
| Perphenazine enanthate | 17528-28-8 | Antipsychotics | 0 |
| Peruvoside | 1182-87-2 | Cardiac stimulants | 0 |
| Petesicatib | 1252637-35-6 | Enzyme Replacements/modifiers | 0 |
| Petroleum ether (40-60) | 832-32-4 | | 0 |
| Pevonedistat | 905579-51-3 | Enzyme Replacements/modifiers | 0 |
| Pexacerfont | 459856-18-9 | Anti-anxiety | 0 |
| Pexastimogene devacirepvec | 1058624-46-6 | | 0 |
| Pexelizumab | 219685-93-5 | | 0 |
| Pexidartinib | 1029044-16-3 | Enzyme Replacements/modifiers | 0 |
| Pexiganan | 147664-63-9 | Other substances | 0 |
| Pexmetinib | 945614-12-0 | | 0 |
| Phanquinone | 84-12-8 | Antiparasitics | 0 |
| Phenacemide | 63-98-9 | | 0 |
| Phenaridine | 42045-97-6 | | 0 |
| Phenazocine | 58073-76-0 | Analgesics | 0 |
| Phencyclidine | 77-10-1 | | 0 |
| Phenethyl Isothiocyanate | 2257-09-2 | Antineoplastics | 0 |
| Phenethylamine | 64-04-0 | Central Nervous System Agents | 0 |
| Pheneticillin | 147-55-7 | Antibacterials | 0 |
| Pheneturide | 90-49-3 | Anticonvulsants | 0 |
| Phenformin | 114-86-3 | | 0 |
| Phenglutarimide | 1156-05-4 | Central Nervous System Agents | 0 |
| Phenindamine | 82-88-2 | | 0 |