| Prepro TRH (178-199) | Phe-Ile-Asp-Pro-Glu-Leu-Gln-Arg-Ser-Trp-Glu-Glu-Lys-Glu-Gly-Glu-Gly-Val-Leu-Met-Pro-Glu | C116H176N28O39S | 2618.92 |
| TRH, Free Acid | Pyr-His-Pro | C16H21N5O5 | 363.4 |
| Prepro TRH (160-169) | Ser-Phe-Pro-Trp-Met-Glu-Ser-Asp-Val-Thr | C54H75N11O18S1 | 1198.33 |
| Prepro TRH (53-74) | Phe-Leu-Trp-Lys-Asp-Leu-Gln-Arg-Val-Arg-Gly-Asp-Leu-Gly-Ala-Ala-Leu-Asp-Ser-Trp-Ile-Thr | C118H182N32O32 | 2560.96 |
| Prepro TRH (83-106) | Glu-Glu-Glu-Glu-Lys-Asp-Ile-Glu-Ala-Glu-Glu-Arg-Gly-Asp-Leu-Gly-Glu-Gly-Gly-Ala-Trp-Arg-Leu-His | C115H176N34O45 | 2754.89 |
| TRH-SH Pro | Cys-Lys-Arg-Gln-His-Pro-Gly-Lys-Arg-Cys | C48H85N21O12S2 | 1212.46 |
| TRH | Pyr-His-Pro-NH2 | C16H22N6O4 | 362.41 |
| TRH (free acid) | Pyr-His-Pro | C16H21N7O3 | 363.41 |
| [Glu2]-TRH | Pyr-Glu-Pro-NH2 | C15H22N4O6 | 354.38 |
| [Phe2]-TRH | Pyr-Phe-Pro- NH2 | C19H24N4O4 | 372.44 |
| TRH-AMC | Pyr-His-Pro-AMC | C26H28N8O4 | 520.61 |
| TRH-Gly | Pyr-His-Pro-Gly | C18H24N6O6 | 420.44 |