4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid
Also known as: 1H-Pyrazole-3-carboxylic acid, 4-bromo-5-methyl-, 1H-pyrazole-5-carboxylic acid, 4-bromo-3-methyl-, 4-BROMO-5-METHYL-1H-PYRAZOLE-3-CARBOXYLIC ACID, 4-Bromo-5-methyl-1H-pyrazole-3-carboxylic acid, 4-Bromo-5-methylpyrazole-3-carboxylic acid, 4-bromo-5-methyl-1(2)H-pyrazole-3-carboxylic acid, 4-Brom-5-methyl-1(2)H-pyrazol-3-carbonsaeure, MFCD08056671
4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid (CAS 82231-52-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5BrN2O2 and a molecular weight of 205.009 g/mol. Key properties include a melting point of 273-276ºC(dec), a boiling point of 410.8±45.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 202.3±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 82231-52-5
- Jingsj CID
- J-39377-1
- Molecular Formula
- C5H5BrN2O2
- Molecular Weight
- 205.009 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 273-276ºC(dec) |
|---|---|
| Boiling Point | 410.8±45.0 °C at 760 mmHg |
| Density | 1.9±0.1 g/cm3 |
| Flash Point | 202.3±28.7 °C |
| Exact Mass | 203.953430 |
| PSA | 65.98000 |
| LogP | 0.86 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.641 |
Customs & Trade Information
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid?
The CAS number of 4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid is 82231-52-5.
What are the molecular formula and molecular weight of 4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid?
4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid has molecular formula C5H5BrN2O2 and molecular weight 205.009 g/mol.
What are the upstream and downstream products of 4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid?
For 4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid, Upstream Products: 3-Methyl-1H-pyrazole-5-carboxylic acid, 5-Methyl-1H-pyrazole-3-carboxylic acid, 4-Amino-5-methyl-1H-pyrazole-3-carboxylic acid; Downstream Products: 4-Bromo-5-methyl-1H-pyrazole-3-carboxamide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-bromo-5-methyl-1H-pyrazole-3-carboxylic acid (CAS 82231-52-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39377-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.