Endocrinology/Hormones Thyroid hormone receptor(THR) Protirelin Acetate(24305-27-9 free base)

Protirelin Acetate(24305-27-9 free base)

Catalog No. T6956L   CAS T6956L
Synonyms: Lopremone Acetate, Thyroliberin Acetate, TRH Acetate, TRF Acetate, Synthetic thyrotropin-releasing hormone Acetate, pGlu-His-Pro-NH2 Acetate,

Protirelin Acetate is a tripeptide that stimulates the release of thyrotropin and prolactin.

Protirelin Acetate(24305-27-9 free base), CAS T6956L
Pack Size Availability Price/USD Quantity
5 mg In stock 50.00
10 mg In stock 69.00
25 mg In stock 142.00
100 mg In stock 396.00
200 mg In stock 573.00
Bulk Inquiry
Select Batch  
Purity 100.00%
Biological Description
Chemical Properties
Storage & Solubility Information
Description Protirelin Acetate is a tripeptide that stimulates the release of thyrotropin and prolactin.
In vitro
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. 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
Animal Research
Protirelin (TRH tartRatse) is dissolved in physiological saline (Rats).RatsNinety 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, 5 mg/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.
Animal Model:
Synonyms Lopremone Acetate , Thyroliberin Acetate , TRH Acetate , TRF Acetate , Synthetic thyrotropin-releasing hormone Acetate , pGlu-His-Pro-NH2 Acetate ,
Purity 100.00%
Molecular Weight 422.44
Formula C18H26N6O6
CAS No. T6956L


0-4℃ for short term (days to weeks), or -20℃ for long term (months).

Solubility Information

( < 1 mg/ml refers to the product slightly soluble or insoluble )


References and Literature
1. Van Sinay E,etal.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,etal.Hyperthermia induced by thyrotropin-releasing hormone (TRH, protirelin) in the rat.Kurume Med J. 1979;26(2):107-12.

Related Products

Related compounds with same targets
Taltirelin acetate Protirelin Acetate KAT681 L-Thyroxine sodium salt pentahydrate CO23 Levothyroxine sodium MGL3196 Liothyronine sodium

Dose Conversion

Safe and effective drug dosing is necessary, regardless of its purpose of administration. Learn More

In vivo Formulation Calculator (Clear solution)

Step One: Enter information below
Average weight of animals
Dosing volume per animal
Number of animals
Step Two: Enter the in vivo formulation
% Tween 80
% ddH2O
Calculate Reset


Molarity Calculator
Dilution Calculator
Reconstitution Calculation
Molecular Weight Calculator

Molarity Calculator allows you to calculate the

  • mass of a compound required to prepare a solution of known volume and concentration
  • volume of solution required to dissolve a compound of known mass to a desired concentration
  • concentration of a solution resulting from a known mass of compound in a specific volume
See Example

An example of a molarity calculation using the molarity calculator
What is the mass of compound required to make a 10 mM stock solution in 10 ml of water given that the molecular weight of the compound is 197.13 g/mol?
Enter 197.13 into the Molecular Weight (MW) box
Enter 10 into the Concentration box and select the correct unit (millimolar)
Enter 10 into the Volume box and select the correct unit (milliliter)
Press calculate
The answer of 19.713 mg appears in the Mass box


Calculator the dilution required to prepare a stock solution

Calculate the dilution required to prepare a stock solution
The dilution calculator is a useful tool which allows you to calculate how to dilute a stock solution of known concentration. Enter C1, C2 & V2 to calculate V1.

See Example

An example of a dilution calculation using the Tocris dilution calculator
What volume of a given 10 mM stock solution is required to make 20ml of a 50 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=50 μM, V2=20 ml and V1 is the unknown:
Enter 10 into the Concentration (start) box and select the correct unit (millimolar)
Enter 50 into the Concentration (final) box and select the correct unit (micromolar)
Enter 20 into the Volume (final) box and select the correct unit (milliliter)
Press calculate
The answer of 100 microliter (0.1 ml) appears in the Volume (start) box


Calculate the volume of solvent required to reconstitute your vial

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial.
Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Enter the chemical formula of a compound to calculate its molar mass and elemental composition

Tip: Chemical formula is case sensitive: C10H16N2O2 c10h16n2o2

Instructions to calculate molar mass (molecular weight) of a chemical compound:
To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.


Tech Support

Answers to questions you may have can be found in the Inhibitor Handling Instructions. Topics include how to prepare stock solutions, how to store Products, and issues that need special attention for cell-based assays and animal experiments.