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Alloxan

CAS No.
50-71-5
Chemical Name:
Alloxan
Synonyms
Alloxane;Pyrimidine-2,4,5,6(1H,3H)-tetraone;ALOXAN;ALLOXAN;ALLOXAN 98%;Mesoxalurea;Alloxan 7169;MESOXALYLUREA;Urea, mesoxalyl-;yrimidinetetrone
CBNumber:
CB4719885
Molecular Formula:
C4H2N2O4
Molecular Weight:
142.07
MDL Number:
MFCD00006031
MOL File:
50-71-5.mol
MSDS File:
SDS
Last updated:2026-05-20 15:44:27
Product description Number Pack Size Price
Pyrimidine-2,4,5,6(1H,3H)-tetraone AA003U04 10mg $283
Pyrimidine-2,4,5,6(1H,3H)-tetraone AA003U04 50mg $327
Pyrimidine-2,4,5,6(1H,3H)-tetraone AA003U04 100mg $362
Pyrimidine-2,4,5,6(1H,3H)-tetraone AA003U04 500mg $517
Pyrimidine-2,4,5,6(1H,3H)-tetraone AA003U04 5g $573
More product size

Alloxan Properties

Melting point ~245 °C (dec.)
Boiling point 259.59°C (rough estimate)
Density 1.8588 (rough estimate)
refractive index 1.4610 (estimate)
storage temp. 2-8°C
pka pK (25°) 6.63
Water Solubility 8g/L(temperature not stated)
CAS DataBase Reference 50-71-5(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 6SW5YHA5NG
NIST Chemistry Reference Alloxan(50-71-5)
EPA Substance Registry System 2,4,5,6(1H,3H)-Pyrimidinetetrone (50-71-5)

SAFETY

Risk and Safety Statements

Hazard Codes  Xn
Risk Statements  20/21/22-36/37/38
Safety Statements  26-36
WGK Germany  3
8-10-23
TSCA  TSCA listed
Hazardous Substances Data 50-71-5(Hazardous Substances Data)

Alloxan price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
aablocks AA003U04 Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 10mg $283 2026-05-28 Buy
aablocks AA003U04 Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 50mg $327 2026-05-28 Buy
aablocks AA003U04 Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 100mg $362 2026-05-28 Buy
aablocks AA003U04 Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 500mg $517 2026-05-28 Buy
aablocks AA003U04 Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 5g $573 2026-05-28 Buy
Product number Packaging Price Buy
AA003U04 10mg $283 Buy
AA003U04 50mg $327 Buy
AA003U04 100mg $362 Buy
AA003U04 500mg $517 Buy
AA003U04 5g $573 Buy

Alloxan Chemical Properties,Uses,Production

Chemical Properties

Alloxan is a white crystals, become pink on exposure to air; colorless aqueous solution which imparts pink color to skin. Soluble in water and alcohol.

Uses

Alloxan is used in biochemical research, cosmetics, organic synthesis.

Definition

ChEBI: 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.

Safety Profile

Poison by intraperitoneal, intravenous, subcutaneous, and rectal routes. Moderately toxic by ingestion. An experimental teratogen. Other experimental reproductive effects. Mutation data reported. Produces dlabetes in experimental animals. Decomposes in storage to release CO2. Do not store in sealed container. Explodes when heated above 170℃. When heated to decomposition it emits toxic fumes of NOx,.

Purification Methods

Crystallisation from water gives the tetrahydrate. Anhydrous crystals are obtained by crystallisation from acetone, glacial acetic acid or by sublimation in vacuo. [See below and Beilstein 24 H 500, 24 I 428, 24 II 301, 24 III/IV 2137.]

Alloxan Preparation Products And Raw materials

Raw materials

Preparation Products

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alloxan:2,4,5,6(1h,3h)-pyrimidinetetraone Pyrimidine-2,4,5,6(1H,3H)-tetraone monohydrate ALLOXAN 2,4,5,6(1H,3H)-PYRIMIDINETETRONE MESOXALYLUREA MESOXALYLCARBAMIDE ,4,5,6-Pyrimidinetetrone 2,4,5,6-pyrimidintetron 2,4,5,6-Pyrimidintetrone 2,4,5,6-Tetraoxohexahydropyrimidine 5-oxo-barbituricaci Alloxan 7169 Barbituric acid, 5-oxo- Urea, mesoxalyl- yrimidinetetrone MESOXALYLCARBAMIDE 98% MESOXALYLUREA 98% ALLOXAN 98% Alloxan(Hydrate) AlloxanTetrahydrate99% ALLOXAN 4-HYDRATE Mesoxalurea 1,3-diazinane-2,4,5,6-tetrone ALOXAN 2,4,5,6(1H,3H)-Pyrimidinetetraone 2,4,5,6-Pyrimidinetetrone 5-Oxobarbituric acid 2 4 5 6(1H 3H)-PYRIMIDINETETRONE 98% Alloxan DISCONTINUED. Please see A548525. Alloxane Pyrimidine-2,4,5,6(1H,3H)-tetraone 50-71-5 C4H2N2O4 C4H2N2O44H20 Analytical Chromatography Product Catalog Analytical Reagents