6-methoxy-2H-1,4-benzoxazin-3(4H)-one

Also known as: 6-methoxy-2H-benzo[b][1,4]oxazin-3(4H)-one, 6-methoxy-4H-1,4-benzoxazin-3-one, 6-methoxy-3,4-dihydro-2H-1,4-benzoxazin-3-one

6-methoxy-2H-1,4-benzoxazin-3(4H)-one (CAS 5023-12-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NO3 and a molecular weight of 179.17300 g/mol. Key properties include a melting point of 162-164ºC, a boiling point of 355.5ºC at 760mmHg, a density of 1.245g/cm3 and a flash point of 168.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5023-12-1
Jingsj CID: J-1504257-6
Molecular Formula: C₉H₉NO₃
Molecular Weight: 179.17300 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	162-164ºC
Boiling Point	355.5ºC at 760mmHg
Density	1.245g/cm3
Flash Point	168.8ºC
Exact Mass	179.05800
PSA	47.56000
LogP	1.16410
Refractive Index	1.546

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 6-methoxy-2H-1,4-benzoxazin-3(4H)-one?

The CAS number of 6-methoxy-2H-1,4-benzoxazin-3(4H)-one is 5023-12-1.

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

6-methoxy-2H-1,4-benzoxazin-3(4H)-one has molecular formula C9H9NO3 and molecular weight 179.17300 g/mol.

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

For 6-methoxy-2H-1,4-benzoxazin-3(4H)-one, Upstream Products: 2-Amino-4-methoxyphenol, Chloroacetyl chloride, 4-Methoxy-2-nitrophenol; Downstream Products: 6-Methoxy-3,4-dihydro-2H-benzo[b][1,4]oxazine.

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. "6-methoxy-2H-1,4-benzoxazin-3(4H)-one (CAS 5023-12-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504257-6 (accessed 2026-11-09).

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