2,4,5-Trihydroxypyrimidine, 5-Hydroxyuracil - Names and Identifiers
Name | ISOBARBITURIC ACID
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Synonyms | ISOBARBITURIC ACID Fluorouracil EP Impurity B dihydropyrimidine-2,4,5(3H)-trione 1,6-Dihydro-2,4,5(3H)-pyrimidinetrione 2-Hydroxy-1,6-dihydropyrimidine-4,5-dione 2,4,5(3H)-Pyrimidinetrione, dihydro- (9CI) 2,4,5-Trihydroxypyrimidine, 5-Hydroxyuracil Fluorouracil Impurity 2(Fluorouracil EP Impurity B)
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CAS | 496-76-4
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EINECS | 207-829-9 |
2,4,5-Trihydroxypyrimidine, 5-Hydroxyuracil - Physico-chemical Properties
Molecular Formula | C4H4N2O3
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Molar Mass | 128.09 |
Density | 1.455±0.06 g/cm3(Predicted) |
Melting Point | >300 °C (dec.)(lit.) |
Solubility | Soluble in DMSO (Sparingly), Methanol (Sparingly). |
Appearance | crystalline |
Color | light yellow |
BRN | 127205 |
pKa | 8.25±0.20(Predicted) |
Storage Condition | Room Temprature |
2,4,5-Trihydroxypyrimidine, 5-Hydroxyuracil - Risk and Safety
Hazard Symbols | Xi - Irritant
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Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin.
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Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 - Wear suitable protective clothing.
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WGK Germany | 3 |
HS Code | 2933599550 |
2,4,5-Trihydroxypyrimidine, 5-Hydroxyuracil - Introduction
The ISOBARBITURIC ACID(Isobarbituric Acid) is an organic compound with the chemical formula C4H4N2O3. It is a colorless crystalline solid with a strong bitter taste.
ISOBARBITURIC ACID is mainly used for the preparation of caffeine, barbital and other drugs. It is one of the commonly used reagents for caffeine analysis and can form red or purple complexes with caffeine. Therefore, ISOBARBITURIC ACID is often used to determine the caffeine content in beverages, coffee, tea and other foods containing caffeine.
ISOBARBITURIC ACID is generally synthesized by the reaction of urea and acetone. First, urea and acetone react under alkaline conditions to form barbituric acid. The barbituric ACID then undergoes a cyclization reaction under acidic conditions to give ISOBARBITURIC ACID.
ISOBARBITURIC ACID has no obvious toxicity, but care should be taken to avoid contact with skin and eyes. Wear protective gloves and goggles during use. When disposing of waste, it is necessary to dispose of it in accordance with local waste management regulations.
Last Update:2024-04-09 21:01:54