HKOH-1r
Based on 8 publication(s) in Google Scholar
HKOH-1r is a highly sensitive green fluorescent probe for the specific detection of ·OH in living cells with a maximum excitation wavelength and emission wavelength of 500 nm and 520 nm, respectively.
For research use only. We do not sell to patients.
- Purity: 98.03%
- CAS No.: 2138472-08-7
- Formula: C33H21Cl2I2NO11
- Molecular Weight:938.28
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Storage:
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Publications Citing Use of MedChemExpress (MCE) HKOH-1r
More- Redox Biol. 2024 May 23:73:103207. [Abstract]
- J Colloid Interface Sci. 2024 Jul 15:666:244-258. [Abstract]
- Int J Biol Macromol. 2025 Jan 20:140116. [Abstract]
- Cell Rep. 2024 Jul 9;43(7):114477. [Abstract]
- Int J Nanomedicine. 2025 Jul 5:20:8765-8781. [Abstract]
- Virulence. 2026 Dec 31;17(1):2646808. [Abstract]
- mSystems. 2023 Dec 21;8(6):e0102623. [Abstract]
- AMB Express. 2024 Dec 24;14(1):141. [Abstract]
Biological Activity
Guide (The following is our recommended protocol. This protocol is only a guide and should be modified according to your specific needs).
1. Preparation of HKOH-1r working solution
1.1 Preparation of the stock solution
Dissolve 1 mg HKOH-1r in 107 μL DMSO to obtain 10 mM of stock solution.
Note: It is recommended to store the stock solution at -20°C -80°C away from light and avoid repetitive freeze-thaw cycles.
1.2 Preparation of HKOH-1r working solution
Dilute the stock solution in serum-free cell culture medium or PBS to obtain 1-10 μM of working solution.
Note: Please adjust the concentration of HKOH-1r working solution according to the actual situation.
2. Cell staining
2.1 Suspension cells (6-well plate)
a. Centrifuge at 1000 g at 4°C for 3-5 minutes and then discard the supernatant. Wash twice with PBS, 5 minutes each time.The cell density is 1×106/mL
b. Add 1 mL of working solution, and then incubate at room temperature for 5-30 minutes.
c. Centrifuge at 400 g at 4°C for 3-4 minutes and then discard the supernatant.
d. Wash twice with PBS, 5 minutes each time.
e. Resuspend cells with serum-free cell culture medium or PBS.Observation by fluorescence microscopy or flow cytometry.
2.2 Adherent cells
a. Culture adherent cells on sterile coverslips.
b. Remove the coverslip from the medium and aspirate excess medium.
c. Add 100 μL of working solution, gently shake it to completely cover the cells,and then incubate at room temperature for 5-30 minutes.
d. Wash twice with medium, 5 minutes each time.Observation by fluorescence microscopy or flow cytometry.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
520
500
Chemical Information
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CAS No. 2138472-08-7
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Appearance Solid
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Molecular Weight 938.28
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Formula C33H21Cl2I2NO11
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Color White to yellow
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SMILES
O=C(C1=C2C=CC=C1)OC32C4=C(C=C(OC5=CC(I)=C(O)C(I)=C5)C(Cl)=C4)OC6=CC(O)=C(Cl)C=C63.CC(N(CC(OC)=O)CC(OC)=O)=O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Publications (8)
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Journal Impact Factor
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Most Recent
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Redox Biol
Redistribution of defective mitochondria-mediated dihydroorotate dehydrogenase imparts 5-fluorouracil resistance in colorectal cancer. [Abstract]2024 May 23:73:103207. PMID: 38805974 -
J Colloid Interface Sci
A multifunctional cascade enzyme system for enhanced starvation/chemodynamic combination therapy against hypoxic tumors. [Abstract]2024 Jul 15:666:244-258. PMID: 38598997 -
Int J Biol Macromol
Hyaluronic acid-mediated targeted nano-modulators for activation of pyroptosis for cancer therapy through multichannel regulation of Ca2+ overload. [Abstract]2025 Jan 20:140116. PMID: 39842602 -
Cell Rep
Synthetic lethal CRISPR screen identifies a cancer cell-intrinsic role of PD-L1 in regulation of vulnerability to ferroptosis. [Abstract]2024 Jul 9;43(7):114477. PMID: 38985676 -
Int J Nanomedicine
Boosting Hydroxyl Radical Generation with Nitrogen Vacancy-Modified Carbon Nitride for Triggering Dual Damage of Cancer Nucleus DNA-Mitochondria against Hypoxic Tumors. [Abstract]2025 Jul 5:20:8765-8781. PMID: 40635718 -
Virulence
Antibacterial efficacy and mechanism of the novel antimicrobial peptide lachnospirin-1 against Acinetobacter baumannii. [Abstract]2026 Dec 31;17(1):2646808. PMID: 41838520 -
mSystems
2023 Dec 21;8(6):e0102623. PMID: 38047647 -
AMB Express
Repurposing pinaverium bromide against Staphylococcus and its biofilms with new mechanisms. [Abstract]2024 Dec 24;14(1):141. PMID: 39718732
Solvent & Solubility
DMSO : 95 mg/mL (101.25 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, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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 (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Purity & Documentation
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Data Sheet (279 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Bai X, et, al. HKOH-1: A Highly Sensitive and Selective Fluorescent Probe for Detecting Endogenous Hydroxyl Radicals in Living Cells. Angew Chem Int Ed Engl. 2017 Oct 9;56(42):12873-12877. [Content Brief]
[2]. Xiaoyu Bai, et al. HKOH-1: A Highly Sensitive and Selective Fluorescent Probe for Detecting Endogenous Hydroxyl Radicals in Living Cells. Angew Chem Int Ed Engl. 2017 Oct 9;56(42):12873-12877. [Content Brief]
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 (protect from light). 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 | 1 mM | 1.0658 mL | 5.3289 mL | 10.6578 mL | 26.6445 mL |
| 5 mM | 0.2132 mL | 1.0658 mL | 2.1316 mL | 5.3289 mL | |
| 10 mM | 0.1066 mL | 0.5329 mL | 1.0658 mL | 2.6644 mL | |
| 15 mM | 0.0711 mL | 0.3553 mL | 0.7105 mL | 1.7763 mL | |
| 20 mM | 0.0533 mL | 0.2664 mL | 0.5329 mL | 1.3322 mL | |
| 25 mM | 0.0426 mL | 0.2132 mL | 0.4263 mL | 1.0658 mL | |
| 30 mM | 0.0355 mL | 0.1776 mL | 0.3553 mL | 0.8881 mL | |
| 40 mM | 0.0266 mL | 0.1332 mL | 0.2664 mL | 0.6661 mL | |
| 50 mM | 0.0213 mL | 0.1066 mL | 0.2132 mL | 0.5329 mL | |
| 60 mM | 0.0178 mL | 0.0888 mL | 0.1776 mL | 0.4441 mL | |
| 80 mM | 0.0133 mL | 0.0666 mL | 0.1332 mL | 0.3331 mL | |
| 100 mM | 0.0107 mL | 0.0533 mL | 0.1066 mL | 0.2664 mL |