Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate
1-甲基-5-羟基吡唑-3-羧酸甲酯
Also known as: 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid methyl ester, Methyl 1-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate, 1-Methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylic acid methyl ester, NSC 338308, Methyl 5-hydroxy-1-methyl-3-pyrazolecarboxylate
Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate (CAS 51985-95-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O3 and a molecular weight of 156.139 g/mol. It is also known as 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid methyl ester, Methyl 1-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate and 1-Methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylic acid methyl ester. Key properties include a melting point of 195-200°C, a boiling point of 330.7±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 153.8±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 51985-95-6
- Jingsj CID
- J-1175736-0
- Molecular Formula
- C6H8N2O3
- Chinese Name
- 1-甲基-5-羟基吡唑-3-羧酸甲酯
- Molecular Weight
- 156.139 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 195-200°C |
|---|---|
| Boiling Point | 330.7±22.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 153.8±22.3 °C |
Frequently Asked Questions
What is the CAS number of Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate?
The CAS number of Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate is 51985-95-6.
What are the molecular formula and molecular weight of Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate?
Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate has molecular formula C6H8N2O3 and molecular weight 156.139 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate (CAS 51985-95-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1175736-0 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.