1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol
Also known as: 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol, 2-Methyl-5-(trifluoromethyl)-2H-pyrazol-3-ol, 5-Hydroxy-1-methyl-3-(trifluoromethyl)pyrazole, 5-Hydroxy-1-methyl-3-trifluoromethyl-1H-pyrazole, 1H-Pyrazol-5-ol, 1-methyl-3-(trifluoromethyl)-, 2-Methyl-3-hydroxy-5-trifluoromethylpyrazole, 2-Methyl-5-trifluoromethyl-2H-pyrazol-3-ol, 2-methyl-5-(trifluoromethyl)-1H-pyrazol-3-one, 3-(Trifluoromethyl)-1-methyl-1H-pyrazol-5-ol, MFCD00139833
1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol (CAS 122431-37-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5F3N2O and a molecular weight of 166.101 g/mol. Key properties include a melting point of 177-179ºC, a boiling point of 224.4±35.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 89.5±25.9 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 122431-37-2
- Jingsj CID
- J-39326-0
- Molecular Formula
- C5H5F3N2O
- Molecular Weight
- 166.101 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 177-179ºC |
|---|---|
| Boiling Point | 224.4±35.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 89.5±25.9 °C |
| Exact Mass | 166.035400 |
| PSA | 38.05000 |
| LogP | 1.97 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.471 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol?
The CAS number of 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol is 122431-37-2.
What are the molecular formula and molecular weight of 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol?
1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol has molecular formula C5H5F3N2O and molecular weight 166.101 g/mol.
Is 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol hazardous?
1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol?
For 1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol, Upstream Products: Ethyl 4,4,4-trifluoroacetoacetate, Ethyl 4,4,4-trifluoro-2-butynoate; Downstream Products: 5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Methyl-3-(trifluoromethyl)-1H-pyrazol-5-ol (CAS 122431-37-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39326-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.