Fosfomycin

磷霉素

Also known as: Phosphonomycin, MK-955, (2R,3S)-3-methyloxiranylphosphonic acid, Fosfocina, Fosfomicina, Fosfomycine, Fosfomycinum, Veramina, [(2R,3S)-3-methyloxiran-2-yl]phosphonic acid

Fosfomycin (CAS 23155-02-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H7O4P and a molecular weight of 138.05900 g/mol. It is also known as Phosphonomycin, MK-955 and (2R,3S)-3-methyloxiranylphosphonic acid. Key properties include a melting point of 94ºC, a boiling point of 342.651ºC at 760 mmHg, a density of 1.561g/cm3 and a flash point of 161.03ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 23155-02-4
Jingsj CID: J-1987642-7
Molecular Formula: C₃H₇O₄P
Chinese Name: 磷霉素
Molecular Weight: 138.05900 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	94ºC
Boiling Point	342.651ºC at 760 mmHg
Density	1.561g/cm3
Flash Point	161.03ºC
Exact Mass	138.00800
PSA	79.87000
Vapor Pressure	0mmHg at 25°C
Refractive Index	1.486

Activity & Biological Data

Additional Information	[1]. Falagas ME, et al. Fosfomycin. Clin Microbiol Rev. 2016 Apr. 29(2):321-47. [2]. Dijkmans AC, et al. Fosfomycin: Pharmacological, Clinical and Future Perspectives. Antibiotics (Basel). 2017 Oct 31. 6(4):24. [3]. Inouye S, et al. Mode of protective action of fosfomycin against dibekacin-induced nephrotoxicity in the dehydrated rats. J Pharmacobiodyn. 1982 Dec. 5(12):941-50.

Customs & Trade Information

HS Code	2931900090
Summary	2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Fosfomycin?

The CAS number of Fosfomycin is 23155-02-4.

What are the molecular formula and molecular weight of Fosfomycin?

Fosfomycin has molecular formula C3H7O4P and molecular weight 138.05900 g/mol.

What are the upstream and downstream products of Fosfomycin?

For Fosfomycin, Upstream Products: Fosfomycin sodium, (2-Aminoethyl)phosphonic acid, (2-Hydroxyethyl)phosphonic acid; Downstream Products: Tobramycin.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Fosfomycin (CAS 23155-02-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987642-7 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.