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6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester

Also known as: 2H-1,4-Benzoxazine-8-carboxylic acid, 6-chloro-3,4-dihydro-3-oxo-, methyl ester, 6-Chloro-3,4-Dihydro-3-Oxo-2H-1,4-Benzoxazine-8-CarboxylicAcidMethylEster, 6-Chloro-3,4-dihydro-3-oxo-2H-benzo[b][1,4]oxazine-8-carboxylate, 6-Chloro-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazine-8-carboxylic acid methyl ester, Methyl 6-chloro-3,4-dihydro-3-oxo-2H-benzo[b][1,4]oxazine-8-carboxylate, Methyl 6-chloro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate, methyl 6-chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylate

6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester (CAS 123040-75-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H8ClNO4 and a molecular weight of 241.62800 g/mol. Key properties include a melting point of 239-241ºC, a boiling point of 451.5ºC at 760 mmHg and a density of 1.424. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
123040-75-5
Jingsj CID
J-1311835-9
Molecular Formula
C10H8ClNO4
Molecular Weight
241.62800 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point239-241ºC
Boiling Point451.5ºC at 760 mmHg
Density1.424
Exact Mass241.01400
PSA64.63000
LogP1.59550

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester?

The CAS number of 6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester is 123040-75-5.

What are the molecular formula and molecular weight of 6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester?

6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester has molecular formula C10H8ClNO4 and molecular weight 241.62800 g/mol.

What are the upstream and downstream products of 6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester?

For 6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester, Upstream Products: Methyl 5-chloro-2-hydroxy-3-nitrobenzoate, Methyl 5-chloro-2-hydroxybenzoate, Methyl 3-amino-5-chloro-2-hydroxybenzoate; Downstream Products: 3,4-Dihydro-4-methyl-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid, Methyl 6-chloro-4-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxylate, 6-chloro-4-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-8-carboxylic acid.

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

Last updated:

How to cite: Jingsj. "6-Chloro-3,4-dihydro-3-oxo-2H-1,4-benzoxazine-8-carboxylic acid methyl ester (CAS 123040-75-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1311835-9 (accessed 2026-11-09).

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