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Chemical substance record

L-cycloserine

339-72-0C3H6N2O2102.093 g/mol

A 4-amino-1,2-oxazolidin-3-one that has S configuration. An antibiotic isolated from Erwinia uredovora. — ChEBI

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Identity & molecular properties

Source-linked values
CAS number339-72-0ChEBI ↗
Molecular formulaC3H6N2O2ChEBI ↗
Molar mass102.093 g/molChEBI ↗
Monoisotopic mass102.04293 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:75592ChEBI ↗

Cross-source molecular data

PubChem
Molar mass102.09 g/molPubChem ↗
Exact mass102.042927438 DaPubChem ↗
Computed XLogP-1.5PubChem ↗
Topological polar surface area (Ų)64.4PubChem ↗
H-bond donors2PubChem ↗
H-bond acceptors3PubChem ↗
Rotatable bonds0PubChem ↗

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

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L-cycloserine
(4S)-4-amino-1,2-oxazolidin-3-one
DYDCUQKUCUHJBH-REOHCLBHSA-N
[H][C@]1(N)CONC1=O
InChI=1S/C3H6N2O2/c4-2-1-7-5-3(2)6/h2H,1,4H2,(H,5,6)/t2-/m0/s1

Names & synonyms

(4S)-4-amino-1,2-oxazolidin-3-onelevcicloserinalevcycloserinelevcycloserinum

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

Classification & relationships

ChEBI ontology

Roles recorded in ChEBI

anticonvulsantEC 2.3.1.50 (serine C-palmitoyltransferase) inhibitoranti-HIV agent

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
Equivalent amount
0.00979499 mol

Uses 102.093 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
C
Carbon · 3 atoms
35.29%
O
Oxygen · 2 atoms
31.34%
N
Nitrogen · 2 atoms
27.44%
H
Hydrogen · 6 atoms
5.92%

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

Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:75592

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

NCBI PubChem · CID 449215 · 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.