CAS 24305-27-9|TRH
Introduction：Basic information about CAS 24305-27-9|TRH, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | TRH | ||
|---|---|---|---|
| CAS Number | 24305-27-9 | Molecular Weight | 362.38 |
| Density | 1.5±0.1 g/cm3 | Boiling Point | 942.1±65.0 °C at 760 mmHg |
| Molecular Formula | C16H22N6O4 | Melting Point | / |
| MSDS | ChineseUSA | Flash Point | 523.6±34.3 °C |
Names
| Name | protirelin |
|---|---|
| Synonym | More Synonyms |
TRH BiologicalActivity
| Description | Protirelin is a highly conserved neuropeptide that exerts the hormonal control of thyroid-stimulating hormone (TSH) levels as well as neuromodulatory functions. |
|---|---|
| Related Catalog | Signaling Pathways >>Others >>Thyroid Hormone ReceptorResearch Areas >>Inflammation/ImmunologyPeptidesResearch Areas >>Endocrinology |
| Target | Thyroid hormone receptor |
| In Vivo | Protirelin (TRH) is an evolutionarily ancient neuropeptide, having its origin before the divergence of protostomes and deuterostomes, and may ancestrally have been involved in the control of postembryonic growth and reproduction[1]. The effect of the thyrotropin-releasing hormone (Protirelin, TRH), one of the hypothalamic releasing hormones, on body temperature is investigated in the rat. Protirelin, in doses of 1, 5, 10 and 20 mg/kg, is injected intraperitoneally to male Wistar rats weighing 200-250 g. Protirelin causes a temporary rise in body temperature dose-dependently. The thyroidectomized rats injected 20 mg/kg of Protirelin which induces a significant hyperthermia in the sham-operated animals, fail to show a rise in body temperature. The present results suggest that a release of thyroid hormone might participate in the hyperthermic action of Protirelin[2]. |
| Animal Admin | Rats[2] Ninety male Wistar rats weighing 200-250 g are subjected to the study. In the first experiment, 50 rats are divided into five groups randomly. Four doses of Protirelin dissolved in physiological saline, i. e., 1 mg/kg, 5mg/kg, 10 mg/kg and 20 mg/kg, are administered intraperitoneally to the four groups and saline to the remaining control group. Rectal temperature is measured at the place 5 cm inner from the anus with the electronic thermister before and after treatment with Protirelin or saline. In the second experiment, 40 rats are thyroidectomized or sham-operated under the anesthesia by thiopental sodium. Ten days after the operation, 20 mg/kg of Protirelin or saline is administered to the thyroidectomized and sham-operated animals by i. p. and rectal temperature is measured using the same method as used in the first experiment. These two experiments are undertaken from 1 p, m, to 4 p. m. and the room temperature is kept at 24±1°C through the experiments including the breeding period. For a statistical analysis, Student's t test (two-tailed) is adopted. |
| References | [1]. Van Sinay E, et al. Evolutionarily conserved TRH neuropeptide pathway regulates growth in Caenorhabditis elegans. Proc Natl Acad Sci U S A. 2017 May 16;114(20):E4065-E4074. [2]. Noda Y, et al. Hyperthermia induced by thyrotropin-releasing hormone (TRH, Protirelin) in the rat. Kurume Med J. 1979;26(2):107-12. |
Chemical & Physical Properties
| Density | 1.5±0.1 g/cm3 |
|---|---|
| Boiling Point | 942.1±65.0 °C at 760 mmHg |
| Molecular Formula | C16H22N6O4 |
| Molecular Weight | 362.38 |
| Flash Point | 523.6±34.3 °C |
| PSA | 144.49000 |
| LogP | -2.43 |
| Vapour Pressure | 0.0±0.3 mmHg at 25°C |
| Index of Refraction | 1.617 |
| InChIKey | XNSAINXGIQZQOO-SRVKXCTJSA-N |
| SMILES | NC(=O)C1CCCN1C(=O)C(Cc1cnc[nH]1)NC(=O)C1CCC(=O)N1 |
| Storage condition | −20°C |
| Water Solubility | H2O: 10 mg/mL, clear, colorless |
Toxicological Information
CHEMICAL IDENTIFICATION |
ACUTE TOXICITY DATA - TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Human - man
- DOSE/DURATION :
- 5714 ng/kg/1M-C
- TOXIC EFFECTS :
- Behavioral - coma Cardiac - pulse rate Lungs, Thorax, or Respiration - dyspnea
- REFERENCE :
- MJAUAJ Medical Journal of Australia. (Australasian Medical Pub. Co. Ltd., 71-79 Arundel St., Glebe, N.S.W., Australia) V.1- 1914- Volume(issue)/page/year: 143,264,1985
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Human - man
- DOSE/DURATION :
- 5333 ng/kg/2M-C
- TOXIC EFFECTS :
- Behavioral - coma Vascular - BP lowering not characterized in autonomic section
- REFERENCE :
- BMJOAE British Medical Journal. (British Medical Assoc., BMA House, Tavistock Sq., London WC1H 9JR, UK) V.1- 1857- Volume(issue)/page/year: 287,532,1983
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Human - woman
- DOSE/DURATION :
- 8 ug/kg/2M-C
- TOXIC EFFECTS :
- Behavioral - convulsions or effect on seizure threshold Cardiac - pulse rate increase, without fall in BP
- REFERENCE :
- BMJOAE British Medical Journal. (British Medical Assoc., BMA House, Tavistock Sq., London WC1H 9JR, UK) V.1- 1857- Volume(issue)/page/year: 287,532,1983
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- >5 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- >10 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 514 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- >10 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- >20 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 921 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,727,1982 ** REPRODUCTIVE DATA **
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intraperitoneal
- DOSE :
- 2 mg/kg
- SEX/DURATION :
- female 7-16 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Specific Developmental Abnormalities - urogenital system Reproductive - Effects on Newborn - stillbirth
- REFERENCE :
- OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 8,807,1974
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intraperitoneal
- DOSE :
- 20 mg/kg
- SEX/DURATION :
- female 7-16 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
- REFERENCE :
- OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 8,807,1974
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intraperitoneal
- DOSE :
- 200 mg/kg
- SEX/DURATION :
- female 7-16 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Effects on Newborn - sex ratio
- REFERENCE :
- OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 8,807,1974
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intraperitoneal
- DOSE :
- 150 mg/kg
- SEX/DURATION :
- female 6-15 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
- REFERENCE :
- OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 8,807,1974
Safety Information
| Personal Protective Equipment | Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter |
|---|---|
| Safety Phrases | S22-S24/25 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 2 |
| RTECS | TW3580000 |
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Synonyms
| thyrotropin-releasing hormone |
| MFCD00038640 |
| 5-Oxo-L-prolyl-L-histidyl-L-proline |
| TRF |
| TRH |
| <Glu-His-Pro-NH2 |
| Thypinone |
| Prem |
| THR 2-3 |
| L-pGlu-L-His-L-ProNH2 |
| tsh-rf |
| THR 1-2 |
| 1-(N-(5-Oxo-L-prolyl)-L-histidyl)-L-proline |
| EINECS 246-143-4 |
| Glp-His-Pro-NH2 |
| L-Proline, 5-oxo-L-prolyl-L-histidyl- |
| pGlu-His-Pro-NH2 |
| Stimu TSH |
| L-pyroglutamyl-L-histidyl-L-proline amide |
| lopremone |
| Pyr-HP-NH2 |
