Norfloxacin

Also known as: 1-ethyl-6-fluoro-4-oxo-7-piperazin-1-yl-1,4-dihydroquinoline-3-carboxylic acid, 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid, 1,4-dihydro-1-ethyl-6-fluoro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylic acid, 1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid, 1-ethyl-6-fluoro-7-piperazino-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid, 3-Quinolinecarboxylic acid, 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-, Barazan, Chibroxin, Chibroxol, Floxacin, Fulgram, Lexinor, Noroxin, Sebercim, Utinor, Zoroxin, MK-0366, AM-715, Norfloxacin (base and/or unspecified salts), Norfloxacin(Nicotinate&Hcl)

Norfloxacin (CAS 70458-96-7) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H18FN3O3 and a molecular weight of 319.331 g/mol. Key properties include a melting point of 220°C, a boiling point of 555.8±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 289.9±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 70458-96-7
Jingsj CID: J-986595-2
Molecular Formula: C₁₆H₁₈FN₃O₃
Molecular Weight: 319.331 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	220°C
Boiling Point	555.8±50.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	289.9±30.1 °C
Exact Mass	319.133209
PSA	74.57000
LogP	0.82
Vapor Pressure	0.0±1.6 mmHg at 25°C
Refractive Index	1.595

Activity & Biological Data

Additional Information	[1]. Nelson JM, et al. Fluoroquinolone-resistant Campylobacter species and the withdrawal of fluoroquinolones from use in poultry: a public health success story. Clin Infect Dis. 2007 Apr 1;44(7):977-80. Epub 2007 Feb 14. [2]. Pade?skaia EN. Norfloxacin: more than 20 years of clinical use, the results and place among fluoroquinolones in modern chemotherapy for infections. Antibiot Khimioter. 2003;48(9):28-36. [3]. Rafalsky V, et al. Quinolones for uncomplicated acute cystitis in women. Cochrane Database Syst Rev. 2006 Jul 19;(3):CD003597.

Additional Information

[1]. Nelson JM, et al. Fluoroquinolone-resistant Campylobacter species and the withdrawal of fluoroquinolones from use in poultry: a public health success story. Clin Infect Dis. 2007 Apr 1;44(7):977-80. Epub 2007 Feb 14. [2]. Pade?skaia EN. Norfloxacin: more than 20 years of clinical use, the results and place among fluoroquinolones in modern chemotherapy for infections. Antibiot Khimioter. 2003;48(9):28-36. [3]. Rafalsky V, et al. Quinolones for uncomplicated acute cystitis in women. Cochrane Database Syst Rev. 2006 Jul 19;(3):CD003597.

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 Norfloxacin?

The CAS number of Norfloxacin is 70458-96-7.

What are the molecular formula and molecular weight of Norfloxacin?

Norfloxacin has molecular formula C16H18FN3O3 and molecular weight 319.331 g/mol.

What are the upstream and downstream products of Norfloxacin?

For Norfloxacin, Upstream Products: Piperazine, 7-Chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, Carbon; Downstream Products: Pefloxacin, Norfloxacin Succinil, 7-(4-acetylpiperazin-1-yl)-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid.

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. "Norfloxacin (CAS 70458-96-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-986595-2 (accessed 2026-11-07).

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