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1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

Also known as: 1-Ethyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid, 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1-Ethyl-4-oxo-6,7,8-trifluoro-1,4-dihydroquinoline-3-carboxylic acid, Lomefloxacin impurity 5, Lomefloxacin 7-fluoro impurity, 1,4-Dihydro-1-ethyl-4-oxo-6,7,8-trifluoro-3-quinolinecarboxylic acid

1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (CAS 75338-42-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H8F3NO3 and a molecular weight of 271.19200 g/mol. Key properties include a boiling point of 401.703ºC at 760 mmHg and a density of 1.527 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
75338-42-0
Jingsj CID
J-1149610-9
Molecular Formula
C12H8F3NO3
Molecular Weight
271.19200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point401.703ºC at 760 mmHg
Density1.527 g/cm3
Exact Mass271.04600
PSA59.30000
LogP2.13690
Refractive Index1.557

Customs & Trade Information

HS Code2933499090
Summary2933499090. 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 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid?

The CAS number of 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid is 75338-42-0.

What are the molecular formula and molecular weight of 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid?

1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid has molecular formula C12H8F3NO3 and molecular weight 271.19200 g/mol.

What are the upstream and downstream products of 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid?

For 1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, Upstream Products: Ethyl 1-ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate, Ethyl 6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate, 2,3,4-Trifluoroaniline; Downstream Products: Lomefloxacin.

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

Last updated:

How to cite: Jingsj. "1-Ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (CAS 75338-42-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1149610-9 (accessed 2026-11-09).

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