1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one

1-(2-氟苯基)-3-甲基-4,5-二氢-1,2,4-三唑啉-5-酮

Also known as: 2-(2-Fluorophenyl)-5-methyl-1,2-dihydro-3H-1,2,4-triazol-3-one, 3H-1,2,4-Triazol-3-one, 2-(2-fluorophenyl)-1,2-dihydro-5-methyl-

1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one (CAS 153833-78-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8FN3O and a molecular weight of 193.178 g/mol. It is also known as 2-(2-Fluorophenyl)-5-methyl-1,2-dihydro-3H-1,2,4-triazol-3-one and 3H-1,2,4-Triazol-3-one, 2-(2-fluorophenyl)-1,2-dihydro-5-methyl-. Key properties include a boiling point of 256.7±42.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 109.0±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
153833-78-4
Jingsj CID
J-1441196-6
Molecular Formula
C9H8FN3O
Chinese Name
1-(2-氟苯基)-3-甲基-4,5-二氢-1,2,4-三唑啉-5-酮
Molecular Weight
193.178 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point256.7±42.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point109.0±27.9 °C

Frequently Asked Questions

What is the CAS number of 1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one?

The CAS number of 1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one is 153833-78-4.

What are the molecular formula and molecular weight of 1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one?

1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one has molecular formula C9H8FN3O and molecular weight 193.178 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one (CAS 153833-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1441196-6 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.