GB-88
Based on 3 publication(s) in Google Scholar
GB-88 is an oral, selective non-peptide antagonist of PAR2, inhibits PAR2 activated Ca2+ release with an IC50 of 2 μM.
For research use only. We do not sell to patients.
- Purity: 98.66%
- CAS No.: 1416435-96-5
- Formula: C32H42N4O4
- Molecular Weight:546.70
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) GB-88
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Biological Activity
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PAR2 2 μM (IC50) |
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| HT-29 | IC50 |
1 μM
Compound: 4; GB88
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Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of 2f-LIGRLO-NH2-induced ca2+ release preincubated for 15 mins measured after 1 hr by FLIPR assay
Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of 2f-LIGRLO-NH2-induced ca2+ release preincubated for 15 mins measured after 1 hr by FLIPR assay
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[PMID: 26725028] |
| HT-29 | IC50 |
1 μM
Compound: 22, GB88
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Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of agonist-induced calcium mobilization
Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of agonist-induced calcium mobilization
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[PMID: 23895492] |
| HT-29 | IC50 |
1.1 μM
Compound: 3
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Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of 2f-LIGRLO-NH2-stimulated intracellular calcium release preincubated for 30 mins followed by 2f-LIGRLO-NH2 stimulation measured for 60 sec by Fluo-3 AM dye based FLIPR assay
Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of 2f-LIGRLO-NH2-stimulated intracellular calcium release preincubated for 30 mins followed by 2f-LIGRLO-NH2 stimulation measured for 60 sec by Fluo-3 AM dye based FLIPR assay
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[PMID: 27994760] |
| HT-29 | IC50 |
3.6 μM
Compound: 3
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Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of endogenous trypsin-stimulated intracellular calcium release by Fluo-3 AM dye based FLIPR assay
Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of endogenous trypsin-stimulated intracellular calcium release by Fluo-3 AM dye based FLIPR assay
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[PMID: 27994760] |
| HT-29 | IC50 |
9.6 μM
Compound: 4; GB88
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Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of trypsin-induced ca2+ release preincubated for 15 mins measured after 1 hr by FLIPR assay
Antagonist activity at PAR2 in human HT-29 cells assessed as inhibition of trypsin-induced ca2+ release preincubated for 15 mins measured after 1 hr by FLIPR assay
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[PMID: 26725028] |
GB-88 inhibits PAR2-induced acute inflammation in vivo[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Male Wistar rats (8–9 weeks)[1]
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Dosage:10 mg/kg
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Administration:Oral gavage in olive oil
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Result:Was both orally active and anti-inflammatory in vivo, with specific antagonist activity against four structurally and mechanistically different PAR2 agonists (2f-LIGRLO-NH2, trypsin, SLIGRL-NH2 and GB110).
Chemical Information
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CAS No. 1416435-96-5
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Appearance Solid
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Molecular Weight 546.70
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Formula C32H42N4O4
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Color White to off-white
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SMILES
O=C([C@H]([C@@H](C)CC)NC([C@H](CC1CCCCC1)NC(C2=CC=NO2)=O)=O)N3CCC4(C=CC5=C4C=CC=C5)CC3
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (3)
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Journal Impact Factor
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Most Recent
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Autophagy
Neutrophil-derived serine proteases induce FOXA2-mediated autophagy dysfunction and exacerbate colitis-associated carcinogenesis via protease activated receptor 2. [Abstract]2025 Apr 9. PMID: 40205686 -
Commun Biol
2026 May 11. PMID: 42115777 -
Am J Physiol Lung Cell Mol Physiol
PAR-2-activated secretion by airway gland serous cells: role for CFTR and inhibition by Pseudomonas aeruginosa. [Abstract]2021 May 1;320(5):L845-L879. PMID: 33655758
Solvent & Solubility
DMSO : 31.25 mg/mL (57.16 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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.
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.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.08 mg/mL (3.80 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: 2.08 mg/mL (3.80 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.08 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
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).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
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
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Data Sheet (276 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
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 | 1.8292 mL | 9.1458 mL | 18.2916 mL | 45.7289 mL |
| 5 mM | 0.3658 mL | 1.8292 mL | 3.6583 mL | 9.1458 mL | |
| 10 mM | 0.1829 mL | 0.9146 mL | 1.8292 mL | 4.5729 mL | |
| 15 mM | 0.1219 mL | 0.6097 mL | 1.2194 mL | 3.0486 mL | |
| 20 mM | 0.0915 mL | 0.4573 mL | 0.9146 mL | 2.2864 mL | |
| 25 mM | 0.0732 mL | 0.3658 mL | 0.7317 mL | 1.8292 mL | |
| 30 mM | 0.0610 mL | 0.3049 mL | 0.6097 mL | 1.5243 mL | |
| 40 mM | 0.0457 mL | 0.2286 mL | 0.4573 mL | 1.1432 mL | |
| 50 mM | 0.0366 mL | 0.1829 mL | 0.3658 mL | 0.9146 mL |
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