| Size | Price | Stock | Qty |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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| 500mg |
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| 1g |
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Purity: ≥98%
Protirelin (Thyrel TRH) is a novel, potent and highly conserved neuropeptide that exerts the hormonal control of thyroid-stimulating hormone (TSH) levels as well as neuromodulatory functions. Protirelin is used to treat hypothyroidism by stimulating the release of a hormone called thyroid-stimulating hormone, or TSH, from the anterior pituitary gland.
| ln Vivo |
The effect of thyrotropin-releasing hormone (Protirelin, TRH), one of the hypothalamic-releasing hormones, on body temperature in rats was studied. Protirelin was injected intraperitoneally at doses of 1, 5, 10 and 20 mg/kg into male Wistar rats weighing 200-250 g. Protirelin causes a dose-dependent transient increase in body temperature. Injection of 20 mg/kg Protirelin into thyroidectomized rats caused a significant increase in body temperature in sham-operated animals, but did not show an increase in body temperature. The current results indicate that thyroid hormones may have been involved in the control of postembryonic growth and reproduction in the past [1].
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| References | |
| Additional Infomation |
Protirelin is a tripeptide composed of L-pyroglutamyl, L-histidyl and L-prolinamide residues joined in sequence. It has a role as a human metabolite. It is a peptide hormone and a tripeptide.
Protirelin is the pharmaceutically available synthetic analogue of the endogenous peptide thyrotropin-releasing hormone (TRH). It is a tri-peptide tropic hormone, released by the hypothalamus, that stimulates the release of Thyroid Stimulating Hormone (TSH) and prolactin from the anterior pituitary. Although not currently available in any FDA-approved product, protirelin is a component of the TRH Test where it is used to test the response of the anterior pituitary gland in conditions such as secondary hypothyroidism and acromegaly. Protirelin has been reported in Homo sapiens with data available. A tripeptide that stimulates the release of THYROTROPIN and PROLACTIN. It is synthesized by the neurons in the PARAVENTRICULAR NUCLEUS of the HYPOTHALAMUS. After being released into the pituitary portal circulation, TRH (was called TRF) stimulates the release of TSH and PRL from the ANTERIOR PITUITARY GLAND. See also: Transferrin (annotation moved to). |
| Molecular Formula |
C16H22N6O4
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|---|---|
| Molecular Weight |
362.3837
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| Exact Mass |
362.17
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| CAS # |
24305-27-9
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| Related CAS # |
Protirelin acetate;120876-23-5;Thyrotropin-Releasing Hormone (TRH), Free Acid;24769-58-2
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| PubChem CID |
638678
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| Appearance |
White to off-white solid powder
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| Density |
1.5±0.1 g/cm3
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| Boiling Point |
942.1±65.0 °C at 760 mmHg
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| Flash Point |
523.6±34.3 °C
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| Vapour Pressure |
0.0±0.3 mmHg at 25°C
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| Index of Refraction |
1.617
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| LogP |
-2.43
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| Hydrogen Bond Donor Count |
4
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| Hydrogen Bond Acceptor Count |
5
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| Rotatable Bond Count |
6
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| Heavy Atom Count |
26
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| Complexity |
597
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| Defined Atom Stereocenter Count |
3
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| SMILES |
C1C[C@H](N(C1)C(=O)[C@H](CC2=CN=CN2)NC(=O)[C@@H]3CCC(=O)N3)C(=O)N
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| InChi Key |
XNSAINXGIQZQOO-SRVKXCTJSA-N
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| InChi Code |
InChI=1S/C16H22N6O4/c17-14(24)12-2-1-5-22(12)16(26)11(6-9-7-18-8-19-9)21-15(25)10-3-4-13(23)20-10/h7-8,10-12H,1-6H2,(H2,17,24)(H,18,19)(H,20,23)(H,21,25)/t10-,11-,12-/m0/s1
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| Chemical Name |
(S)-N-((S)-1-((S)-2-carbamoylpyrrolidin-1-yl)-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl)-5-oxopyrrolidine-2-carboxamide
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| Synonyms |
Synthetic thyrotropin-releasing hormone; TRF; TRH; TSH-RF; pGlu-His-Pro-NH2; {pGLU}HP-NH2; Protirelin; Antepan; Hirtonin; A-38579; A 38579; A38579; Thyrel TRH
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light. |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
DMSO : ~250 mg/mL (~689.88 mM)
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| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.7595 mL | 13.7977 mL | 27.5953 mL | |
| 5 mM | 0.5519 mL | 2.7595 mL | 5.5191 mL | |
| 10 mM | 0.2760 mL | 1.3798 mL | 2.7595 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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