5,6-Diphenyl-1,2,4-triazin-3(2H)-one

Also known as: 1,2,4-Triazin-3(2H)-one,5,6-diphenyl-, 3-HYDROXY-5,6-DIPHENYL-1,2,4-TRIAZINE, 5,6-DIPHENYL-3-HYDROXY-1,2,4-TRIAZINE, 5,6-DIPHENYL-1,2,4-TRIAZIN-3-OL, 5,6-Diphenyl-1,2,4-triazin-3-ol, 5,6-diphenyl-as-triazin-3(2h)-one, 5,6-diphenyl-as-triazin-3-ol, ai3-15232

5,6-Diphenyl-1,2,4-triazin-3(2H)-one (CAS 4512-00-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H11N3O and a molecular weight of 249.26700 g/mol. Key properties include a melting point of 224-225ºC, a boiling point of 476.4ºC at 760mmHg, a density of 1.24g/cm3 and a flash point of 241.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4512-00-9
Jingsj CID: J-1518994-3
Molecular Formula: C₁₅H₁₁N₃O
Molecular Weight: 249.26700 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	224-225ºC
Boiling Point	476.4ºC at 760mmHg
Density	1.24g/cm3
Flash Point	241.9ºC
Exact Mass	249.09000
PSA	58.90000
LogP	2.91120
Refractive Index	1.662

Customs & Trade Information

HS Code	2933699090
Summary	2933699090 other compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5,6-Diphenyl-1,2,4-triazin-3(2H)-one?

The CAS number of 5,6-Diphenyl-1,2,4-triazin-3(2H)-one is 4512-00-9.

What are the molecular formula and molecular weight of 5,6-Diphenyl-1,2,4-triazin-3(2H)-one?

5,6-Diphenyl-1,2,4-triazin-3(2H)-one has molecular formula C15H11N3O and molecular weight 249.26700 g/mol.

What are the upstream and downstream products of 5,6-Diphenyl-1,2,4-triazin-3(2H)-one?

For 5,6-Diphenyl-1,2,4-triazin-3(2H)-one, Upstream Products: 3-chloro-5,6-diphenyl-1,2,4-triazine, Benzil, 5,6-diphenyl-1,2,4-triazine-3-thiol; Downstream Products: 3-chloro-5,6-diphenyl-1,2,4-triazine, 5,6-Diphenyl-1,2,4-triazine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5,6-Diphenyl-1,2,4-triazin-3(2H)-one (CAS 4512-00-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1518994-3 (accessed 2026-11-09).

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