Home/Chemicals/23155-02-4

Chemical substance record

Fosfomycin

23155-02-4C₃H₇O₄P138.059 g/mol

Organic/Inorganic Small MoleculeChEBI source record

A phosphonic acid having an (R,S)-1,2-epoxypropyl group attached to phosphorus. — ChEBI

Safety references

Safety documents & references

Supplier matching matters

Find the safety document for your specific supplier, product number and grade.

Find a product-specific SDS

Search SDS PDFs Sigma-Aldrich Thermo Fisher

Safety guides and government classification records are not a manufacturer’s SDS. Match supplier, product number, concentration, physical form, region and revision before using a document.

Identity & molecular properties

Source-linked values

CAS number	23155-02-4	ChEBI ↗
Molecular formula	C₃H₇O₄P	ChEBI ↗
Molar mass	138.059 g/mol	ChEBI ↗
Monoisotopic mass	138.0082 Da	ChEBI ↗
Formal charge	0	ChEBI ↗
ChEBI identifier	CHEBI:28915	ChEBI ↗

Cross-source molecular data

PubChem

Molar mass	138.06 g/mol	PubChem ↗
Exact mass	138.00819570 Da	PubChem ↗
Computed XLogP	-1.4	PubChem ↗
Topological polar surface area (Å²)	70.1	PubChem ↗
H-bond donors	2	PubChem ↗
H-bond acceptors	4	PubChem ↗
Rotatable bonds	1	PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier

Source preferred name

fosfomycin

IUPAC name

[(2R,3S)-3-methyloxiran-2-yl]phosphonic acid

InChIKey

YMDXZJFXQJVXBF-STHAYSLISA-N

SMILES

C[C@@H]1O[C@@H]1P(=O)(O)O

InChI

InChI=1S/C3H7O4P/c1-2-3(7-2)8(4,5)6/h2-3H,1H3,(H2,4,5,6)/t2-,3+/m0/s1

Names & synonyms

[(2R,3S)-3-methyloxiran-2-yl]phosphonic acidfosfomicinafosfomycinefosfomycinum

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology

phosphonic acidsChEBI parent class · 26069 ↗epoxideChEBI parent class · 32955 ↗

ether organic heterocyclic compound organic molecular entity

Roles recorded in ChEBI

antimicrobial agentantibacterial agentantiinfective agentantineoplastic agentEC 2.5.1.7 (UDP-N-acetylglucosamine 1-carboxyvinyltransferase) inhibitor

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass

Amount

Input unit

Equivalent amount

0.00724328 mol

Uses 138.059 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions

O

Oxygen · 4 atoms

46.35%

C

Carbon · 3 atoms

26.10%

P

Phosphorus · 1 atom

22.44%

H

Hydrogen · 7 atoms

5.11%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations

[Antibacterial activity of fosfomycin in chronic kidney infections]. ↗Minerva medica · 1978 Dec 1 · PMID 105327

Molecular modeling and bioinformatical analysis of the antibacterial target enzyme MurA from a drug design perspective. ↗Journal of computer-aided molecular design · 2006 Oct-Nov · PMID 17124631

Search PubMed Google Scholar

Sources & record history

Checked 27 Sep 2026

Identity, formula, mass, synonyms & ontologyEMBL-EBI ChEBI · CHEBI:28915

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

Additional molecular descriptorsNCBI PubChem · CID 446987 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

How this record was assembled Suggest a correction