4-Carboxypyrazole
Based on 1 Customer Validation
4-Carboxypyrazole (1H-Pyrazole-4-carboxylic acid) is a metabolite of Fomepizole (HY-B0876). 4-Carboxypyrazole is involved in the synthesis of ALKBH1 inhibitors. 4-Carboxypyrazole can be used in the research of gastric cancer.
For research use only. We do not sell to patients.
- Purity: 99.49%
- CAS No.: 37718-11-9
- Formula: C4H4N2O2
- Molecular Weight:112.09
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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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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HY-B0876
Fomepizole
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HY-100040
Ethyl 1H-pyrazole-4-carboxylate
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HY-34505
1-Methyl-5-pyrazolecarboxylic acid
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HY-76228
1H-pyrazole
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HY-66054
3-Methylpyrazole
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HY-W002458
4-Nitropyrazole
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HY-69052
1-Methyl-1H-pyrazole-4-carboxaldehyde
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HY-W002351
Ethyl 1,5-dimethyl-1H-pyrazole-3-carboxylate
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HY-I0312
4-Iodopyrazole
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HY-34603
1-Methyl-1H-pyrazole-3-carboxylic acid
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HY-34497
Ethyl 3-trifluoromethylpyrazole-4-carboxylate
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HY-W002065R
4-Carboxypyrazole (Standard)
Biological Activity
Chemical Information
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CAS No. 37718-11-9
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Appearance Solid
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Molecular Weight 112.09
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Formula C4H4N2O2
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Color White to off-white
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SMILES
O=C(C1=CNN=C1)O
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Structure Classification
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Initial Source
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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 6 months -20°C 1 month
Solvent & Solubility
DMSO : 100 mg/mL (892.16 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, 6 months; -20°C, 1 month. 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. 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)
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: ≥ 2.5 mg/mL (22.30 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (22.30 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.
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 (272 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
[1]. McMartin KE, et al. Kinetics and metabolism of fomepizole in healthy humans. Clin Toxicol (Phila). 2012 Jun;50(5):375-83. [Content Brief]
[2]. Li F, et al. Structural Optimization and Structure-Activity Relationship of 1H-Pyrazole-4-carboxylic Acid Derivatives as DNA 6mA Demethylase ALKBH1 Inhibitors and Their Antigastric Cancer Activity. J Med Chem. 2024 Sep 12;67(17):15456-15475. [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. 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 | 8.9216 mL | 44.6078 mL | 89.2156 mL | 223.0390 mL |
| 5 mM | 1.7843 mL | 8.9216 mL | 17.8431 mL | 44.6078 mL | |
| 10 mM | 0.8922 mL | 4.4608 mL | 8.9216 mL | 22.3039 mL | |
| 15 mM | 0.5948 mL | 2.9739 mL | 5.9477 mL | 14.8693 mL | |
| 20 mM | 0.4461 mL | 2.2304 mL | 4.4608 mL | 11.1520 mL | |
| 25 mM | 0.3569 mL | 1.7843 mL | 3.5686 mL | 8.9216 mL | |
| 30 mM | 0.2974 mL | 1.4869 mL | 2.9739 mL | 7.4346 mL | |
| 40 mM | 0.2230 mL | 1.1152 mL | 2.2304 mL | 5.5760 mL | |
| 50 mM | 0.1784 mL | 0.8922 mL | 1.7843 mL | 4.4608 mL | |
| 60 mM | 0.1487 mL | 0.7435 mL | 1.4869 mL | 3.7173 mL | |
| 80 mM | 0.1115 mL | 0.5576 mL | 1.1152 mL | 2.7880 mL | |
| 100 mM | 0.0892 mL | 0.4461 mL | 0.8922 mL | 2.2304 mL |
4-Carboxypyrazole Related Classifications
HY-W002065 Related Classifications
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