| Pip - Pir | Nummer |
| Pipacycline | 16 |
| Pipamperon | xxx |
| Pipazetatum | xxx |
| Pipecolin | 2 |
| D L - Pipecolinsäure-ethylester | 16 / 13 |
| Pipemidinsäure | 16 |
| Piper betle | 14 |
| Piper cubeba | 14 / 18 |
| Piper methysticum | 14 |
| Piperacillin | 18 |
| Piperazin | 2 / selten 18 |
| Piperazin Hexahydrat | 16 / selten 18 |
| Piperazin-adipat | 16 / 13 / 19 |
| Piperazin-citrat | |
| 2,2’[3,3’(Piperazin-1,4-diyl)-dipropyl]-bis-(1H-benzimidazo- [2,1-b]-benzol-[l,m,n]-[3,8]-phenanthrolin-1,3,6-trion |
16 / 13 |
| 2-Piperazino-pyridin | 16 |
| 2-Piperazin-1-yl-ethanol | 16 / 13 / 19 / # 6 Augen |
| 2-Piperazin-1-yl-ethylamin | 2 / 18 / 19 |
| Pipercuronium-bromid | 16 |
| Piperidin | 14 / 2 / 19 |
| Piperidin Hydrochlorid | 14 |
| 1-Piperidin-carbox-aldehyd | 16 |
| 1-Piperidin-dithio-carbonsäure, Verbindung+Piperidin (1:1) | |
| 2-Piperidin-essigsäure-α-phenyl-methylester Hydrochlorid | 16 / 18 |
| Piperidinium-chlorid | 14 |
| 2-Piperidino-ethylamin | 2 |
| 2-Piperidino-ethylchlorid-hydrochlorid | 16 |
| 3-Piperidinol | |
| 6-(1-Piperidinyl)-2,4-pyrimidin-diamin-3-oxid | 14 / gelegentlich 18 |
| 4-Piperidon-ethylen-acetal | 16 |
| 4-Piperidon-hydrat Hydrochlorid | 16 / 13 |
| Piperin | 14 / 13 |
| Piperiton | 14 |
| Piperocain Hydrochlorid | |
| Piperonal | |
| Piperonylamin | 2 |
| Piperonyl-butoxid | 14 / 18 / 19 |
| Piperonyl-iso-butyrat | 16 |
| Piperophos | 14 |
| Piperylen | 16 |
| Pipoxolan Hydrochlorid | 16 / 13 |
| Pipradrol | 14 |
| Piproctanyl | |
| Piproctanylbromid | xxx |
| Piproctanyliumbromid | 14 |
| Piprocurariumiodid | 14 / 18 |
| Piprozolin | 16 / 13 |
| Pipsylchlorid | 2 |
| Pirarubicin | 14 |
| Pirazetam | xxx |
| Pirenzepin | xxx |
| Piretanide | 16 / 13 |
| Piribedil | |
| Pirifibrat | 16 |
| Pirimicarb | 14 / 19 |
| Pirimiphos-ethyl | 4 / 19 |
| Pirimiphos-methyl | |
| Piritramid | 14 |
| Pirmenol | 16 / 13 |
| Piroheptin | 16 |
| Piromidinsäure | |
| Piroxicam | 14 / 18 / Selten # 32 Photo |
| Pirprofen | xxx |