2-Ethyl-2H-1,4-benzoxazin-3(4H)-one

2-乙基-2H-1,4-苯并恶嗪-3(4H)-酮

Also known as: 2-Ethyl-2,4-dihydro-1,4-benzoxazin-3-one, 2-Ethyl-2H-benzo[b][1,4]oxazin-3(4H)-one, 2-Ethyl-4H-benzo[1,4]oxazin-3-one, 2-ethyl-3,4-dihydro-2H-1,4-benzoxazin-3-one, 2-ethyl-4H-1,4-benzoxazin-3-one, 2H-1,4-Benzoxazin-3(4H)-one, 2-ethyl-, BAS 07153732

2-Ethyl-2H-1,4-benzoxazin-3(4H)-one (CAS 90921-75-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H11NO2 and a molecular weight of 177.20000 g/mol. It is also known as 2-Ethyl-2,4-dihydro-1,4-benzoxazin-3-one, 2-Ethyl-2H-benzo[b][1,4]oxazin-3(4H)-one and 2-Ethyl-4H-benzo[1,4]oxazin-3-one. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 90921-75-8
Jingsj CID: J-1186876-7
Molecular Formula: C₁₀H₁₁NO₂
Chinese Name: 2-乙基-2H-1,4-苯并恶嗪-3(4H)-酮
Molecular Weight: 177.20000 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	177.07900
PSA	41.82000
LogP	1.88120

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 2-Ethyl-2H-1,4-benzoxazin-3(4H)-one?

The CAS number of 2-Ethyl-2H-1,4-benzoxazin-3(4H)-one is 90921-75-8.

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

2-Ethyl-2H-1,4-benzoxazin-3(4H)-one has molecular formula C10H11NO2 and molecular weight 177.20000 g/mol.

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

For 2-Ethyl-2H-1,4-benzoxazin-3(4H)-one, Upstream Products: 2-Bromobutyric acid, 2-Aminophenol, DL-Ethyl 2-bromobutyrate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Ethyl-2H-1,4-benzoxazin-3(4H)-one (CAS 90921-75-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1186876-7 (accessed 2026-10-28).

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