| Ra - Rg | Nummer |
| R 11 | 6 / Über AGW 19b |
| R 12 | 11 / Über AGW 19b |
| R 13 | 16 |
| R 22 | 6 / Über MAK 19b |
| R-112 | 16 |
| R-112-a | |
| R-113 | |
| R 114 | 5 / 19 |
| R 115 | 11 / 4 |
| Race-methorpham | 14 |
| Race-moramid | |
| Race-morphan | |
| Raddeamin | |
| Radioaktive Stoffe | 19a / 20 |
| Radon | xxx |
| Raffinate (Erdöl) | 10 / 19a |
| Rainfarn | 16 / stark 18 |
| Rainfarnöl | Selten 18 |
| Rainweide | # 227 + |
| Ramaria-Arten | 16 |
| Raney-Kupfer | 12 |
| Raney-Nickel | 12 / 18 / # (19a) |
| Ranitidin | xxx |
| Ranunculin | xxx |
| Ranunculus acris | 14 |
| Rasling, Weißer | 16 |
| Ratanhia | 18 |
| Raubasin | 14 |
| Raucaffricin | xxx |
| Raucharomen | 16 |
| Rauche | 11 |
| Raufloridin | xxx |
| Rauhimbin | 14 |
| Raukopf, Goldgelber | # 227 H |
| Raupin | 14 |
| Rauschbeere | # 227 + |
| Rauschpfeffer | 14 |
| Rautenöl | xxx |
| Rauvolfia serpentina | 14 |
| Rauwolfin | |
| Rauwolscin | |
| Rauwolscin-Hydrochlorid | |
| Rebendolde, Giftige | 16 |
| Reineckesalz | 16 / 19a |
| Reizker, Bruch- | 16 |
| Remazol-Brillantblau R spez. | |
| Remifentanil | 14 |
| Renardin | 14 / 9 |
| Rennin | 16 / 18 |
| Rentierflechte | 18 |
| Reposal | 17 |
| Reproterol | xxx |
| Rescinnamin | 14 |
| Reserpin | 14 / # (19a+b) |
| Reserpinin | 14 |
| Resmethrin | |
| Resol | 14 / 18 |
| Resorcin | 16 / 18 |
| Resorcin-di-acetat | 10 |
| Resorcin-di-methylether | |
| Resorcin-mono-acetat | 16 / # 6 Augen |
| Resorcin-mono-methylether | 16 |
| Resorcinol | 16 / 18 |
| Resorcinol-di-glycidylether | 10 / selten 18 / 19a / # (19c) / # 21 Haut |
| β-Resorcylaldehyd | 16 |
| α-Resorcylsäure | |
| β-Resorcylsäure | |
| all-trans-Retinoesäure | 16 / gelegentlich 18 / # (19b) |
| all-trans-Retinol | 14 / # (19b) |
| Retronecin | 14 |
| Retrorsin | xxx |
| Rettichfälbling | 16 |