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

Also known as: 2H-1,4-Benzoxazin-3(4H)-one, 4-hydroxy-, 3,4-dihydro-4-hydroxy-3-oxo-2H-1,4-benzoxazine, 4-Hydroxy-2,3-dihydro-4H-1,4-benzooxazine-3-one, 4-Hydroxy-3,4-dihydro-2H-1,4-benzoxazine-3-one, 4-hydroxy-1,4-benzoxazin-3-one, 4-hydroxy-1,4-benzoxazine-3-one, 4-hydroxy-2H-1,4-benzoxazin-3-one, 2-Deoxy-DIBOA, RMA-294

4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one (CAS 771-26-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7NO3 and a molecular weight of 165.14600 g/mol. Key properties include a boiling point of 329.3ºC at 760 mmHg, a density of 1.476g/cm3 and a flash point of 153ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
771-26-6
Jingsj CID
J-1167392-0
Molecular Formula
C8H7NO3
Molecular Weight
165.14600 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point329.3ºC at 760 mmHg
Density1.476g/cm3
Flash Point153ºC
Exact Mass165.04300
PSA49.77000
LogP0.86620
Refractive Index1.648

Frequently Asked Questions

What is the CAS number of 4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one?

The CAS number of 4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one is 771-26-6.

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

4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one has molecular formula C8H7NO3 and molecular weight 165.14600 g/mol.

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

For 4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one, Upstream Products: 2-Nitrophenol, 2-(2-Nitrophenoxy)acetic acid; Downstream Products: 7-Methoxy-2H-1,4-benzoxazin-3(4H)-one, 6-CHLORO-2H-1,4-BENZOXAZIN-3(4H)-ONE, 2H-1,4-benzoxazin-3(4H)-one.

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

Last updated:

How to cite: Jingsj. "4-Hydroxy-2H-1,4-benzoxazin-3(4H)-one (CAS 771-26-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1167392-0 (accessed 2026-11-09).

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