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Pharmaceuticals and APIs

Alloxan

Also known as 2,4,5,6(1H,3H)-Pyrimidinetetrone, Mesoxalylurea, Mesoxalylcarbamide

CAS 50-71-5Formula C4H2N2O4Molar mass 142.07 g/molEC 200-062-0
55 suppliers listed Drug substance
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Alloxan chemical structure, C4H2N2O4, CAS 50-71-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Orthorhombic crystals from anhydrous acetone or glacial acetic acid or by sublimation in…
Melting point
256 °C
Boiling point
Sublimes
Density
1.07
Solubility
Sol in benzene
HS code
293359
Category
Pharmaceuticals and APIs
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Alloxan?

Plain description, key identifiers and synonyms

Alloxan is a member of the class of pyrimidones, the structure of which is that of perhydropyrimidine substituted at C-2, -4, -5 and -6 by oxo groups. It has a role as a metabolite and a hyperglycemic agent. It is functionally related to a barbituric acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,3-diazinane-2,4,5,6-tetrone
CAS number
50-71-5 CAS number cross-checkedOther or deprecated CAS: 2244-11-3
EC number
200-062-0
Molecular formula
C4H2N2O4
UNII
6SW5YHA5NG
MDL number
MFCD00006031
InChIKey
HIMXGTXNXJYFGB-UHFFFAOYSA-N
InChI
InChI=1S/C4H2N2O4/c7-1-2(8)5-4(10)6-3(1)9/h(H2,5,6,8,9,10)
SMILES (canonical and isomeric)
C1(=O)C(=O)NC(=O)NC1=O

Synonyms

  • 2,4,5,6(1H,3H)-Pyrimidinetetrone
  • Mesoxalylurea
  • Mesoxalylcarbamide
  • 1,3-diazinane-2,4,5,6-tetrone
  • Alloxane
  • Pyrimidinetetrone
  • Alloxan 7169
  • 2,4,5,6-Tetraoxohexahydropyrimidine
  • 5,6-dioxouracil
  • Alloxanum
  • Pyrimidine-2,4,5,6(1H,3H)-tetraone
  • Urea, mesoxalyl-
  • Barbituric acid, 5-oxo-
  • pyrimidine-2,4,5,6(1H,3H)-tetrone
  • 2,4,5,6-Pyrimidintetron
  • hexahydropyrimidine-2,4,5,6-tetrone
  • 2,4,5,6-Pyrimidintetrone
  • 5-Oxobarbituric acid
  • 2,4,5,6-pyrimidinetetrone
  • mesoxalyl-Urea
  • 2xgm
  • 5-oxo-barbiturate
  • Alloxan tetrahydrat
  • 5-oxo-barbituric acid
  • 2,5,6-Pyrimidintetron
Show all 30 synonyms
  • DivK1c_006961
  • 2,5,6-Tetraoxohexahydropyrimidine
  • 2,5,6(1H,3H)-Pyrimidinetetrone
  • 6-hydroxy-2,4,5-triketopyrimidine
  • 2,4,5,6(1H,3H) Pyrimidinetetrone

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

Appearance
Orthorhombic crystals from anhydrous acetone or glacial acetic acid or by sublimation in vacuoexp.
Melting point
256 °Cexp.
Boiling point
Sublimesexp.
Density
1.07exp.
Solubility
Sol in benzeneexp.

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
142.07 g/molcalc.
Exact mass
142.0015 Dacalc.
LogP (octanol/water)
-2.08calc.
Topological polar surface area
92.34 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
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=C1NC(=O)C(=O)C(=O)N1

O=C1NC(=O)C(=O)C(=O)N1

1 ring, 10 atoms. This chemical is the scaffold itself.

8 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Alloxan suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 55 suppliers
30 of 30 offers
  • 001Chemical
    China, HangzhouUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View
  • 10X Chem
    United States, San DiegoUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View
  • 3WAY Pharm Inc
    China, ShanghaiUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
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  • A2B Chem LLC
    United States, San DiegoUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
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  • Aa Blocks LLC
    United States, San DiegoUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
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  • AHH Chemical co.,ltd
    China, ChangzhouUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View
  • Alfa Chemistry
    United States, HolbrookUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
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  • Amadis Chemical Co., Ltd.
    China, HangzhouUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View
  • Angel Pharmatech Ltd.
    China, ShanghaiUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View
  • Angene Chemical
    China, NanjingUnclaimed profile
    AlloxanGrade, purity and minimum order on request
    Price on request
    View

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

55 suppliers in 12 countries

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Alloxan price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Alloxan is a well-known and universally used agent for evoking experimental diabetes through its toxic effect on the B cells of the Langerhans islets.

In production of diabetes in experimental animals, in nutrition experiments, in organic synthesis.

Roles

  • hyperglycemic agent
  • metabolite
  • pharmaceutical

How it is made

The best synthetic route to alloxan is direct oxidation of barbituric acid with chromium trioxide.

Preparation by direct oxidation of uric acid

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Alloxan?

Alloxan is a member of the class of pyrimidones, the structure of which is that of perhydropyrimidine substituted at C-2, -4, -5 and -6 by oxo groups. It has a role as a metabolite and a hyperglycemic agent. It is functionally related to a barbituric acid.

What is the CAS number of Alloxan?

The CAS registry number of Alloxan is 50-71-5. Other or deprecated CAS numbers: 2244-11-3.

What is the molecular formula and weight of Alloxan?

The molecular formula of Alloxan is C4H2N2O4 and its molar mass is 142.07 g/mol.

What is Alloxan used for?

Alloxan is a well-known and universally used agent for evoking experimental diabetes through its toxic effect on the B cells of the Langerhans islets. In production of diabetes in experimental animals, in nutrition experiments, in organic synthesis.

Is Alloxan hazardous?

No GHS hazard classification for Alloxan is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Alloxan?

Alloxan is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Alloxan?

CompoundList lists 55 suppliers of Alloxan in China, United States, Hong Kong, Canada and 8 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Alloxan?

Suppliers quote Alloxan 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 Alloxan

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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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