1. GPCR/G Protein
  2. Angiotensin Receptor
  3. Saralasin TFA

Saralasin TFA  (Synonyms: [Sar1,Ala8] Angiotensin II TFA)

Cat. No.: HY-P0205B Purity: 99.65%
COA Handling Instructions

Saralasin ([Sar1,Ala8] Angiotensin II) TFA is an octapeptide analog of angiotensin II. Saralasin TFA is a competitive angiotensin II receptor antagonist with a Ki value of 0.32 nM for 74% of the binding sites, and has partial agonist activity as well. Saralasin TFA can be used for the research of renovascular hypertension, renin-dependent (angiotensinogenic) hypertension.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

Saralasin TFA Chemical Structure

Saralasin TFA Chemical Structure

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5 mg USD 100 In-stock
10 mg USD 170 In-stock
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Based on 1 publication(s) in Google Scholar

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Description

Saralasin ([Sar1,Ala8] Angiotensin II) TFA is an octapeptide analog of angiotensin II. Saralasin TFA is a competitive angiotensin II receptor antagonist with a Ki value of 0.32 nM for 74% of the binding sites, and has partial agonist activity as well. Saralasin TFA can be used for the research of renovascular hypertension, renin-dependent (angiotensinogenic) hypertension[1][3][6].

IC50 & Target

Ki: 0.32 nM (Angiotensin II receptor)[3]

In Vitro

Saralasin TFA (1 nM, 48 or 72 h) inhibits cell growth in 3T3 and SV3T3 cells[1].
Saralasin TFA (5 μM, 2h) restores Ito, fast (Fast-Inactivating Transient Outward K+ Current in Mouse Ventricle) and I K, slow (Slow-Inactivating Transient Outward K+ Current in Mouse Ventricl) to control levels in myocytes[2].
Saralasin TFA (0.1-10 nM, 40 min) inhibits binding of FITC-Ang II to rat liver membrane preparation (used as the source of angiotensin receptors) with a Ki value of 0.32 nM for 74% of the binding sites and 2.7 nM for the remaining binding sites[3].
Saralasin TFA (1 μM, perfused rat ovary in vitro) inhibits the ovulation rate versus control and reduces prostaglandin E2 and 6-keto-prostaglandin F levels[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Proliferation Assay[1]

Cell Line: 3T3 and SV3T3 cells
Concentration: 1 nM
Incubation Time: 48 h, 72 h
Result: Inhibited cell growth in 3T3 and SV3T3 cells and caused an increase of cellular renin concentration.
In Vivo

Saralasin TFA (intravenous injection, 5-50 μg/kg, a single dose) ameliorates the oxidative stress and tissue injury in cerulein-induced pancreatitis[5].
Saralasin TFA (subcutaneous injection, 10 and 30 mg/kg, a single dose) increases serum renin activity (SRA) in normal, conscious rats, without markedly altering blood pressure or heart rate[6].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Cerulein-induced acute pancreatitis rats model[5]
Dosage: 5, 10, 20, and 50 μg/kg, a single dose.
Administration: Intravenous injection
Result: Restored the pancreatic morphological characteristics to the control level.
Reduced pancreatic injury and suppressed the glutathione depletion induced by cerulean.
Animal Model: Male Sprague-Dawley rats[6]
Dosage: 10 and 30 mg/kg, a single dose.
Administration: Subcutaneous injection
Result: Stimulated renin release without altering blood pressure or heart rate at the time of measuring serum renin levels 20 minutes after injection.
Molecular Weight

1026.07

Formula

C44H66F3N13O12

Appearance

Solid

Color

White to off-white

Sequence

{Sar}-Arg-Val-Tyr-Val-His-Pro-Ala

Sequence Shortening

{Sar}-RVYVHPA

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

H2O : 100 mg/mL (97.46 mM; Need ultrasonic)

DMSO : 50 mg/mL (48.73 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.9746 mL 4.8730 mL 9.7459 mL
5 mM 0.1949 mL 0.9746 mL 1.9492 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
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Concentration
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Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

=
Concentration (final)

C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (2.44 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (2.44 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 100 mg/mL (97.46 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.65%

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 0.9746 mL 4.8730 mL 9.7459 mL 24.3648 mL
5 mM 0.1949 mL 0.9746 mL 1.9492 mL 4.8730 mL
10 mM 0.0975 mL 0.4873 mL 0.9746 mL 2.4365 mL
15 mM 0.0650 mL 0.3249 mL 0.6497 mL 1.6243 mL
20 mM 0.0487 mL 0.2436 mL 0.4873 mL 1.2182 mL
25 mM 0.0390 mL 0.1949 mL 0.3898 mL 0.9746 mL
30 mM 0.0325 mL 0.1624 mL 0.3249 mL 0.8122 mL
40 mM 0.0244 mL 0.1218 mL 0.2436 mL 0.6091 mL
H2O 50 mM 0.0195 mL 0.0975 mL 0.1949 mL 0.4873 mL
60 mM 0.0162 mL 0.0812 mL 0.1624 mL 0.4061 mL
80 mM 0.0122 mL 0.0609 mL 0.1218 mL 0.3046 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Saralasin TFA
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