| Trit - Tz | Nummer |
| Triticonazol | 16 |
| Tritoqualin | xxx |
| Tritylbromid | 2 |
| Tritylchlorid | 16 |
| Tritylium-hexachloro-antimonat | 12 / 18 / 19 |
| Tritylium-hexafluoro-phosphat | 5 / 19 |
| Tritylium-tetra-fluoroborat | |
| 4-Trityl-morpholin | 16 |
| 1,2,4-Trivinyl-cyclohexan | |
| Trixylyl-phosphat | 16 / 19 |
| Trizinat | 14 / 12 / 19 / 19b |
| Trizink-bis-(orthophosphat) | xxx |
| Trizink-di-phosphid | 11 |
| Troclosen-kalium | 16 |
| Troclosen-natrium | |
| Troclosen-natrium-Dihydrat | |
| Trofosfamid | 14 / 19 / # (19c) |
| Trollblume | # 227 + |
| Trollius europaeus | 16 |
| Trompetenbaum, Gemeiner | xxx |
| Tropaeolin-O,O | 16 / 18 |
| Tropaeolum maius | 16 |
| Tropan-Alkaloide | xxx |
| 3,α-Tropanol | 14 |
| D L - Tropasäure | 16 |
| α-Tropenol-hydrochlorid | xxx |
| Tropin | 14 |
| Tropinon | 16 |
| Tropin-D,L-tropat | 1 / gelegentlich 18 |
| Tropylium-tetra-fluoroborat | 5 |
| DL-Tropyl-tropat | 1 / gelegentlich 18 |
| L-Tropyl-tropat | 14 / 1 |
| Trospium-chlorid | 1 |
| TRP - P-2 | 16 / # (19c) |
| Trunkelbeere | # 227 + |
| Trypaflavin | 16 |
| Trypanblau | 16 / # (19a+b) |
| Trypsin | 16 / 18 |
| Tryptanthrin | 14 |
| Tryptolin-hydrochlorid | 16 |
| L-Tryptophan | 14 |
| Tryptophan P-2 | 16 / # (19c) |
| DL-Tryptophanbetain | 16 |
| T-2-Toxin | 14 |
| Tuamino-heptanum | 16 |
| Tubawurzel | 14 |
| Tubercidin | |
| (+)-Tubocurarin-chlorid | xxx |
| (+)-Tubocurarin-chlorid Hydrat | 14 |
| (+)-Tubocurarin-di-chlorid Pentahydrat | |
| Tulipa gesneriana U N D Hybriden | 16 / stark+häufig 18 |
| Tulipalin A | Stark 18 |
| Tulipan A | |
| Tuliposid A | |
| Tulobuterol | 14 |
| Tulpe | # 227 + |
| Tulpenbaum | 16 |
| Tulpenmagnolie | # 227 (+) |
| Tungölbaum | 16 |
| Tunicamycin | 14 / # (19b) |
| Tüpfel-Hartheu | 16 / # 32 Photo |
| Tussilago farfara | Schwach(!)+selten(!) 18 |
| Tylopilus felleus | 16 |
| Tylose | # 227 H |
| Tylosintartrat | 18 |
| L - Tyrosin | 16 |
| L - Tyrosinbetain | 14 |
| Tyrothricin | xxx |