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5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one

Also known as: 3-Methyl-4-phenyl-1H-1,2,4-triazol-5(4H)-one, 2,4-Dihydro-5-methyl-4-phenyl-3H-1,2,4-triazol-3-one, 3-Methyl-4-phenyl-4,5-dihydro-1,2,4-triazolon-(5), 4-Phenyl-3-hydroxy-5-methyl-1,2,4-triazol, 5-Methyl-4-phenyl-1,2,4-triazol-3(2H)-one, 5-Methyl-4-phenyl-2,4-dihydro-[1,2,4]triazol-3-on, 5-methyl-4-phenyl-2,4-dihydro-[1,2,4]triazol-3-one, methylphenyldihydrotriazolone

5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 1010-54-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9N3O and a molecular weight of 175.18700 g/mol. Key properties include a melting point of 153-154ºC, a boiling point of 409.1ºC at 760mmHg, a density of 1.27g/cm3 and a flash point of 201.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1010-54-4
Jingsj CID
J-998852-7
Molecular Formula
C9H9N3O
Molecular Weight
175.18700 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point153-154ºC
Boiling Point409.1ºC at 760mmHg
Density1.27g/cm3
Flash Point201.2ºC
Exact Mass175.07500
PSA50.68000
LogP0.86900
Vapor Pressure2.81E-07mmHg at 25°C
Refractive Index1.644

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one?

The CAS number of 5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one is 1010-54-4.

What are the molecular formula and molecular weight of 5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one?

5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one has molecular formula C9H9N3O and molecular weight 175.18700 g/mol.

What are the upstream and downstream products of 5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one?

For 5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one, Upstream Products: Methyl carbazate, Triethyl orthoacetate, 4-Phenylsemicarbazide.

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

Last updated:

How to cite: Jingsj. "5-Methyl-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 1010-54-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-998852-7 (accessed 2026-11-09).

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