Flucloxacillin

Also known as: Floxacillin, Floxapen, Flopen, Flucil, Staphylex, Culpen, Ladropen, Flupen, Abboflox, BRL 2039, FK 900, Penplus, Stafoxil, Staphcil, MFCD00864886

Flucloxacillin (CAS 5250-39-5) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H17ClFN3O5S and a molecular weight of 453.872 g/mol. Key properties include a boiling point of 677.3±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 363.4±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5250-39-5
Jingsj CID: J-1971399-9
Molecular Formula: C₁₉H₁₇ClFN₃O₅S
Molecular Weight: 453.872 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	677.3±55.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	363.4±31.5 °C
Exact Mass	453.056152
PSA	138.04000
LogP	2.60
Vapor Pressure	0.0±2.2 mmHg at 25°C
Refractive Index	1.672

Activity & Biological Data

Additional Information	[1]. Greimel F, et, al. Efficacy of antibiotic treatment of implant-associated Staphylococcus aureus infections with moxifloxacin, flucloxacillin, rifampin, and combination therapy: an animal study. Drug Des Devel Ther. 2017 Jun 14;11:1729-1736. [2]. Comber KR, Merrikin DJ, Sutherland R. Antibacterial activity and synergy, in vitro and in vivo, of a combination of amoxycillin and flucloxacillin. Chemotherapy. 1979;25(1):30-9.

Additional Information

[1]. Greimel F, et, al. Efficacy of antibiotic treatment of implant-associated Staphylococcus aureus infections with moxifloxacin, flucloxacillin, rifampin, and combination therapy: an animal study. Drug Des Devel Ther. 2017 Jun 14;11:1729-1736. [2]. Comber KR, Merrikin DJ, Sutherland R. Antibacterial activity and synergy, in vitro and in vivo, of a combination of amoxycillin and flucloxacillin. Chemotherapy. 1979;25(1):30-9.

Frequently Asked Questions

What is the CAS number of Flucloxacillin?

The CAS number of Flucloxacillin is 5250-39-5.

What are the molecular formula and molecular weight of Flucloxacillin?

Flucloxacillin has molecular formula C19H17ClFN3O5S and molecular weight 453.872 g/mol.

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. "Flucloxacillin (CAS 5250-39-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1971399-9 (accessed 2026-11-07).

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