Ceftiofur

Also known as: Ceftiofur Free Acid, (6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetyl]amino}-3-{[(furan-2-ylcarbonyl)sulfanyl]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, CM 31916, U-67279A, 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2Z)-2-(2-amino-4-thiazolyl)-2-(methoxyimino)-1-oxoethyl]amino]-3-[[(2-furanylcarbonyl)thio]methyl]-8-oxo-, (6R,7R)-, Excenel, Naxcel

Ceftiofur (CAS 80370-57-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H17N5O7S3 and a molecular weight of 523.563 g/mol. Key property: a density of 1.8±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 80370-57-6
Jingsj CID: J-1961822-5
Molecular Formula: C₁₉H₁₇N₅O₇S₃
Molecular Weight: 523.563 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.8±0.1 g/cm3
Exact Mass	523.028992
PSA	256.26000
LogP	2.05
Refractive Index	1.820
Storage Conditions	0-6°C

Activity & Biological Data

Additional Information	[1]. Fernández-Varón E, et al. Pharmacokinetics (PK), pharmacodynamics (PD), and PK-PD integration of ceftiofur after a single intravenous, subcutaneous and subcutaneous-LA administration in lactating goats. BMC Vet Res. 2016 Oct 13;12(1):232.

Customs & Trade Information

HS Code	2941905700

Frequently Asked Questions

What is the CAS number of Ceftiofur?

The CAS number of Ceftiofur is 80370-57-6.

What are the molecular formula and molecular weight of Ceftiofur?

Ceftiofur has molecular formula C19H17N5O7S3 and molecular weight 523.563 g/mol.

What are the upstream and downstream products of Ceftiofur?

For Ceftiofur, Upstream Products: Cefotaxime, 2-Furancarbothioic acid, Cefotaxime sodium.

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. "Ceftiofur (CAS 80370-57-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1961822-5 (accessed 2026-11-09).

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