8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Also known as: 3-Quinolinecarboxylic acid, 1,4-dihydro-8-methoxy-4-oxo-, 8-Methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid, 8-methoxy-4-oxo-1H-quinoline-3-carboxylic acid, 8-Methoxy-4-chinolin-3-carbonsaeure, NSC199383

8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 35975-69-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9NO4 and a molecular weight of 219.19300 g/mol. Key properties include a boiling point of 407.1ºC at 760mmHg, a density of 1.402g/cm3 and a flash point of 200ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 35975-69-0
Jingsj CID: J-1450179-2
Molecular Formula: C₁₁H₉NO₄
Molecular Weight: 219.19300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	407.1ºC at 760mmHg
Density	1.402g/cm3
Flash Point	200ºC
Exact Mass	219.05300
PSA	79.39000
LogP	1.23490

Customs & Trade Information

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid?

The CAS number of 8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid is 35975-69-0.

What are the molecular formula and molecular weight of 8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid?

8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid has molecular formula C11H9NO4 and molecular weight 219.19300 g/mol.

What are the upstream and downstream products of 8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid?

For 8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, Upstream Products: Ethyl 8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate, Diethyl 2-(((2-methoxyphenyl)amino)methylene)malonate, o-Anisidine.

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. "8-Methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 35975-69-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1450179-2 (accessed 2026-11-09).

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