1. GPCR/G Protein Neuronal Signaling
  2. Somatostatin Receptor
  3. SSTR5 antagonist 1

SSTR5 antagonist 1 (compound 25a) is a selective and orally available somatostatin receptor subtype 5 (SSTR5) antagonist with IC50s of 9.6 and 57 nM for hSSTR5 and mSSTR5, respectively.

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SSTR5 antagonist 1 Chemical Structure

SSTR5 antagonist 1 Chemical Structure

CAS No. : 1628741-91-2

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 394 In-stock
Solution
10 mM * 1 mL in DMSO USD 394 In-stock
Solid
5 mg USD 350 In-stock
10 mg USD 550 In-stock
25 mg USD 990 In-stock
50 mg USD 1650 In-stock
100 mg USD 2250 In-stock
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Based on 1 publication(s) in Google Scholar

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Description

SSTR5 antagonist 1 (compound 25a) is a selective and orally available somatostatin receptor subtype 5 (SSTR5) antagonist with IC50s of 9.6 and 57 nM for hSSTR5 and mSSTR5, respectively[1].

IC50 & Target

IC50: 9.6 nM (hSSTR5), 57 nM (mSSTR5)[1]

In Vitro

SSTR5 antagonist 1 (compound 25a) (30 μM) inhibits hERG activity by 5.6%[1].
SSTR5 antagonist 1 (10 μM) shows highly selective inhibitory effect on SSTR5 over SSTR1-4, with inhibition rates of 11%, 8%, 14%, 10%[1].
SSTR5 antagonist 1 (1 μM; 15 min and 30 min) exhibits good metabolic stability toward both human and mouse microsomes with in vitro CLint value of <10 μL/min/kg (HLM) and 19 μL/min/kg (MLM), respectively[1].

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

In Vivo

SSTR5 antagonist 1 (compound 25a) (1 mg/kg; p.o.; single dose) is orally available with acceptable plasma exposure in mice in pharmacokinetic screening and exhibits excellent solubility (260 μg/mL, pH=6.8)[1].
SSTR5 antagonist 1 (100 mg/kg; p.o.; single dose; measured at 0-120 min) augments insulin secretion in a glucose-dependent manner and lowers blood glucose concentration in high-fat diet fed C57BL/6J mice[1].
SSTR5 antagonist 1 (1, 3, 10, and 30 mg/kg; p.o.; single dose) shows dose-dependent effect on glucose excursion measured during the oral glucose tolerance test in HFD fed C57BL/6J mice[1].
Pharmacokinetic profiles in male ICR mouse (8-week-old)[1]

Route Dose (mg/kg) CLtotal (mL/h/kg) Vss (mL/kg) MRT (h)
iv 0.1 1761 3052 1.7 /
Route Dose (mg/kg) Cmax (ng/mL) Tmax (h) AUC0-8 h (ng·h/mL) F (%)
po 1 74.8 2.0 332 58

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

Animal Model: High-fat diet fed C57BL/6J mice[1]
Dosage: 100 mg/kg
Administration: Oral gavage; single dose; monitored over 2 h
Result: Showed the maximum efficacy superior to that of 10 mg/kg Glibenclamide (HY-15206) and comparable to that of 30 mg/kg Alogliptin (HY-A0023A).
Augmented insulin secretion in a glucose-dependent manner and displayed a blood glucose-lowering effect, indicating its anti-diabetic efficacy in vivo.
Molecular Weight

511.59

Formula

C28H34FN3O5

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

OC(C1CCN(C2=NOC3(CN(CC4=CC(OCC)=C(C5=CC=C(F)C=C5)C(OCC)=C4)C3)C2)CC1)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 90 mg/mL (175.92 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 1.9547 mL 9.7735 mL 19.5469 mL
5 mM 0.3909 mL 1.9547 mL 3.9094 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

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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: ≥ 2.25 mg/mL (4.40 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (22.5 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: ≥ 2.25 mg/mL (4.40 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (22.5 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.
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.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
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).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.9547 mL 9.7735 mL 19.5469 mL 48.8673 mL
5 mM 0.3909 mL 1.9547 mL 3.9094 mL 9.7735 mL
10 mM 0.1955 mL 0.9773 mL 1.9547 mL 4.8867 mL
15 mM 0.1303 mL 0.6516 mL 1.3031 mL 3.2578 mL
20 mM 0.0977 mL 0.4887 mL 0.9773 mL 2.4434 mL
25 mM 0.0782 mL 0.3909 mL 0.7819 mL 1.9547 mL
30 mM 0.0652 mL 0.3258 mL 0.6516 mL 1.6289 mL
40 mM 0.0489 mL 0.2443 mL 0.4887 mL 1.2217 mL
50 mM 0.0391 mL 0.1955 mL 0.3909 mL 0.9773 mL
60 mM 0.0326 mL 0.1629 mL 0.3258 mL 0.8145 mL
80 mM 0.0244 mL 0.1222 mL 0.2443 mL 0.6108 mL
100 mM 0.0195 mL 0.0977 mL 0.1955 mL 0.4887 mL
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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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SSTR5 antagonist 1
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