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Heterocyclic building blocks

Levcycloserine

Also known as L-Cycloserine, (4S)-4-amino-1,2-oxazolidin-3-one, Levcicloserina

CAS 339-72-0Formula C3H6N2O2Molar mass 102.09 g/molEC 206-427-0
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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Levcycloserine chemical structure, C3H6N2O2, CAS 339-72-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
339-72-0
Formula
C3H6N2O2
Molar mass
102.09 g/mol
EC number
206-427-0
HS code
293499
Category
Heterocyclic building blocks

What is Levcycloserine?

Plain description, key identifiers and synonyms

L-cycloserine is a 4-amino-1,2-oxazolidin-3-one that has S configuration. An antibiotic isolated from Erwinia uredovora. It has a role as an anticonvulsant, an EC 2.3.1.50 (serine C-palmitoyltransferase) inhibitor and an anti-HIV agent. It is an enantiomer of a D-cycloserine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4S)-4-amino-1,2-oxazolidin-3-one
CAS number
339-72-0 CAS number cross-checked
EC number
206-427-0
Molecular formula
C3H6N2O2
UNII
AK7DRB7FMO
MDL number
MFCD00064324
InChIKey
DYDCUQKUCUHJBH-REOHCLBHSA-N
InChI
InChI=1S/C3H6N2O2/c4-2-1-7-5-3(2)6/h2H,1,4H2,(H,5,6)/t2-/m0/s1
Canonical SMILES
NC1CONC1=O
Isomeric SMILES
C1[C@@H](C(=O)NO1)N

Synonyms

  • L-Cycloserine
  • (4S)-4-amino-1,2-oxazolidin-3-one
  • Levcicloserina
  • Levcycloserinum
  • Cyclo-L-serine
  • (S)-(-)-Cycloserine
  • (S)-4-Amino-3-isoxazolidinone
  • L-4-Aminoisoxazolidin-3-one
  • L-Oxamicina
  • Cycloserine, l-
  • (4S)-4-aminoisoxazolidin-3-one
  • L-4-Amino-3-isoxazolidinone
  • (-)-cycloserine
  • (-)-4-Amino-3-isossazolidone
  • 3-Isoxazolidinone, 4-amino-, (S)-
  • (-)-4-amino-3-isoxazolidinone
  • (-)-4-aminoisoxazolidin-3-one
  • (S)-4-amino-isoxazolidin-3-one
  • 4-27-00-05550 (Beilstein Handbook Reference)
  • 3-Isoxazolidinone, 4-amino-, (l)-
  • Levcycloserinum (INN-Latin)
  • Levcicloserina (INN-Spanish)
  • L-4-amino-3-isoxazolidone
  • (4S)-4-azaniumyl-4,5-dihydro-1,2-oxazol-3-olate
  • (S)-4-Aminoisoxazolidin-3-one
Show all 31 synonyms
  • (S)-Cycloserine
  • 4-azaniumyl-4,5-dihydro-1,2-oxazol-3-olate
  • (S)-4-Amino-3-isoxazolidone
  • 3-Isoxazolidinone, 4-amino-, (4S)-
  • L-CS
  • Levcycloserine (USAN/INN)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
102.09 g/molcalc.
Exact mass
102.0429 Dacalc.
LogP (octanol/water)
-1.62calc.
Topological polar surface area
64.35 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
7calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CCON1

O=C1CCON1

1 ring, 6 atoms, the 3-Isoxazolidinone ring system.

140 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (20)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Levcycloserine suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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Levcycloserine price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Roles

  • anti-HIV agent
  • anticonvulsant
  • antimicrobial agent
  • antiviral agent
  • central nervous system depressant
  • central nervous system drug
  • enzyme inhibitor
  • pharmaceutical

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Levcycloserine is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Levcycloserine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Levcycloserine, based on the data on this page

What is Levcycloserine?

L-cycloserine is a 4-amino-1,2-oxazolidin-3-one that has S configuration. An antibiotic isolated from Erwinia uredovora. It has a role as an anticonvulsant, an EC 2.3.1.50 (serine C-palmitoyltransferase) inhibitor and an anti-HIV agent. It is an enantiomer of a D-cycloserine.

What is the CAS number of Levcycloserine?

The CAS registry number of Levcycloserine is 339-72-0.

What is the molecular formula and weight of Levcycloserine?

The molecular formula of Levcycloserine is C3H6N2O2 and its molar mass is 102.09 g/mol.

What is Levcycloserine used for?

Known uses and roles of Levcycloserine include building blocks in research and laboratory, screening compounds in research and laboratory, anti-hiv agent, anticonvulsant, antimicrobial agent and 5 more.

Is Levcycloserine hazardous?

Levcycloserine carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Levcycloserine?

Levcycloserine is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Levcycloserine?

CompoundList lists 2 suppliers of Levcycloserine in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Levcycloserine?

Suppliers quote Levcycloserine on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Levcycloserine

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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