Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate

3,4-二氢-2H-苯并[b][1,4]噁嗪-5-羧酸甲酯

Also known as: Methyl 3,4-dihydro-2H-1,4-benzoxazine-5-carboxylate, 3,4-Dihydro-2H-benzo[1,4]oxazine-5-carboxylic acid methyl ester, 2H-1,4-Benzoxazine-5-carboxylic acid, 3,4-dihydro-, methyl ester

Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate (CAS 121591-81-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H11NO3 and a molecular weight of 193.199 g/mol. It is also known as Methyl 3,4-dihydro-2H-1,4-benzoxazine-5-carboxylate, 3,4-Dihydro-2H-benzo[1,4]oxazine-5-carboxylic acid methyl ester and 2H-1,4-Benzoxazine-5-carboxylic acid, 3,4-dihydro-, methyl ester. Key properties include a boiling point of 334.8±41.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 156.3±27.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
121591-81-9
Jingsj CID
J-1497160-8
Molecular Formula
C10H11NO3
Chinese Name
3,4-二氢-2H-苯并[b][1,4]噁嗪-5-羧酸甲酯
Molecular Weight
193.199 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point334.8±41.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point156.3±27.6 °C

Frequently Asked Questions

What is the CAS number of Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate?

The CAS number of Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate is 121591-81-9.

What are the molecular formula and molecular weight of Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate?

Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate has molecular formula C10H11NO3 and molecular weight 193.199 g/mol.

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

Last updated:

How to cite: Jingsj. "Methyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-5-carboxylate (CAS 121591-81-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497160-8 (accessed 2026-10-22).

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