4-Methyl-3,4-dihydroquinoxalin-2(1H)-one

Also known as: 4-methyl-3,4-dihydro-1H-quinoxalin-2-one, 4-methyl-1,2,3,4-tetrahydroquinoxalin-2-one (ambiguous)

4-Methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 67074-63-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H10N2O and a molecular weight of 162.18800 g/mol. Key properties include a boiling point of 343.996ºC at 760 mmHg, a density of 1.16g/cm3 and a flash point of 161.843ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 67074-63-9
Jingsj CID: J-1348683-4
Molecular Formula: C₉H₁₀N₂O
Molecular Weight: 162.18800 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	343.996ºC at 760 mmHg
Density	1.16g/cm3
Flash Point	161.843ºC
Exact Mass	162.07900
PSA	32.34000
LogP	1.27790
Refractive Index	1.565
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. 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 4-Methyl-3,4-dihydroquinoxalin-2(1H)-one?

The CAS number of 4-Methyl-3,4-dihydroquinoxalin-2(1H)-one is 67074-63-9.

What are the molecular formula and molecular weight of 4-Methyl-3,4-dihydroquinoxalin-2(1H)-one?

4-Methyl-3,4-dihydroquinoxalin-2(1H)-one has molecular formula C9H10N2O and molecular weight 162.18800 g/mol.

What are the upstream and downstream products of 4-Methyl-3,4-dihydroquinoxalin-2(1H)-one?

For 4-Methyl-3,4-dihydroquinoxalin-2(1H)-one, Upstream Products: Formaldehyde, 3,4-dihydroquinoxalin-2(1H)-one, N,N-Dimethyl-2-nitroaniline; Downstream Products: 1,2,3,4-Tetrahydroquinoxaline.

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. "4-Methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 67074-63-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1348683-4 (accessed 2026-11-09).

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