| Product Name | CAS No |
| Papaverine hydrochloride | 61-25-6 |
| para-methoxyamphetamine hydrochloride | 50505-80-1 |
| Parabanic acid | 120-89-8 |
| 2,2-Paracyclophane | 1633-22-3 |
| Paraoxon | 311-45-5 |
| Paraxanthine | 611-59-6 |
| a,a’-Paraxylyl bismethanethiosulfonate | 3948-46-7 |
| Parecoxib | 198470-84-7 |
| Parecoxib sodium | 198470-85-8 |
| Paricalcitol | 131918-61-1 |
| Paricalcitol 25-b-D-glucuronide | 1260588-15-5 |
| Paroxol | 105812-81-5 |
| Paroxol methanesulfonate | 608521-21-7 |
| Paroxol tosylate | 317323-77-6 |
| Patchouli alcohol | 5986-55-0 |
| (S)-Patulin methyl ether | 123251-09-2 |
| Paullone | 142273-18-5 |
| Pazopanib | 444731-52-6 |
| Pazufloxacin mesylate | 163680-77-1 |
| PBS 57 | 898531-99-2 |
| PCI-24781 | 783355-60-2 |
| PD-0235901 | 391210-10-9 |
| PD 149163 | 169528-11-4 |
| PD 161570 | 192705-80-9 |
| PD 166285 | 212391-63-4 |
| PD 166866 | 192705-79-6 |
| PD 173952 | 305820-75-1 |
| PD 184161 | 212631-67-9 |
| PD 184352 | 212631-79-3 |
| A2-PE | 863180-05-6 |
| Pectolinarin | 28978-02-1 |
| Peimisine | 19773-24-1 |
| Pemetrexed disodium | 150399-23-8 |
| Pemetrexed methyl ester | 155405-81-5 |
| Pemirolast potassium salt | 100299-08-9 |
| Pemoline | 2152-34-3 |
| (S)-Penbutolol hydrochloride | 28291-30-7 |
| (R)-Penbutolol hydrochloride | 57130-27-5 |
| Penciclovir | 39809-25-1 |
| Pendimethalin | 40487-42-1 |
| L-Penicillamine | 1113-41-3 |
| D-Penicillamine | 52-67-5 |
| Penicillin V potassium salt | 132-98-9 |
| Penicilloic V acid | 1049-84-9 |
| 1,3,4,5,6-Penta-O-acetyl-2-keto-D-fructose | |
| 1,2,3,4,6-Penta-O-acetyl-a-D-galactopyranose | 4163-59-1 |
| 1,2,3,4,6-Penta-O-acetyl-a-D-glucopyranose | 604-68-2 |
| 1,2,3,4,6-Penta-O-acetyl-a-D-mannopyranose | 4163-65-9 |
| 2,4,7,8,9-Penta-O-acetyl-a-D-neuraminic acid methyl ester | 73208-82-9 |
| 1,2,3,4,6-Penta-O-acetyl-a-D-thiogalactopyranose | 130796-15-5 |