Difloxacin

Also known as: 6-Fluoro-1-(4-fluorophenyl)-7-(4-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylic acid, 6-Fluoro-1-(4-fluorophenyl)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid, A-56619, Difloxacin (INN), UNII-5Z7OO9FNFD

Difloxacin (CAS 98106-17-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H19F2N3O3 and a molecular weight of 399.39100 g/mol. Key properties include a boiling point of 595.5ºC at 760 mmHg, a density of 1.409 g/cm3 and a flash point of 313.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 98106-17-3
Jingsj CID: J-1958920-4
Molecular Formula: C₂₁H₁₉F₂N₃O₃
Molecular Weight: 399.39100 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	595.5ºC at 760 mmHg
Density	1.409 g/cm3
Flash Point	313.9ºC
Exact Mass	399.13900
PSA	65.78000
LogP	2.72180

Activity & Biological Data

Additional Information	[1]. E A Gorzynski, et al. Comparative Antimycobacterial Activities of Difloxacin, Temafloxacin, Enoxacin, Pefloxacin, Reference Fluoroquinolones, and a New Macrolide, Clarithromycin. Antimicrob Agents Chemother. 1989 Apr;33(4):591-2.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 Difloxacin?

The CAS number of Difloxacin is 98106-17-3.

What are the molecular formula and molecular weight of Difloxacin?

Difloxacin has molecular formula C21H19F2N3O3 and molecular weight 399.39100 g/mol.

What are the upstream and downstream products of Difloxacin?

For Difloxacin, Upstream Products: 2,4-Dichloro-5-fluoroacetophenone, ethyl 3-(2,4-dichloro-5-fluorophenyl)-3-oxopropanoate, ethyl 2-(2,4-dichloro-5-fluorobenzoyl)-3-ethoxyprop-2-enoate.

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. "Difloxacin (CAS 98106-17-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958920-4 (accessed 2026-11-06).

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