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1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid

Also known as: 1-phenyl-5-(trifluoromethyl)pyrazole-4-carboxylic acid, 1-phenyl-5-(trifluoromethyl)-4-pyrazolecarboxylic acid, 5-(trifluoromethyl)-1-phenyl-1H-pyrazole-4-carboxylic acid, 1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-carboxylic acid, MFCD00173854

1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 98534-81-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H7F3N2O2 and a molecular weight of 256.18100 g/mol. Key properties include a melting point of 134-138 °C(lit.), a boiling point of 138.5ºC at 760mmHg, a density of 1.338g/cm3 and a flash point of 47.2ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98534-81-7
Jingsj CID
J-32146-0
Molecular Formula
C11H7F3N2O2
Molecular Weight
256.18100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Melting Point134-138 °C(lit.)
Boiling Point138.5ºC at 760mmHg
Density1.338g/cm3
Flash Point47.2ºC
Exact Mass256.04600
PSA55.12000
LogP2.58930
Refractive Index1.448

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933199090
Summary2933199090. 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-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

The CAS number of 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid is 98534-81-7.

What are the molecular formula and molecular weight of 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid has molecular formula C11H7F3N2O2 and molecular weight 256.18100 g/mol.

Is 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid hazardous?

1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.

What are the upstream and downstream products of 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

For 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid, Upstream Products: Ethyl 1-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate, Carbon dioxide, 1-Phenyl-5-(trifluoromethyl)-1H-pyrazole; Downstream Products: 1-Phenyl-5-(trifluoromethyl)pyrazole-4-carbonyl chloride.

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-phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 98534-81-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32146-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.