Pyrimidine is a six-membered aromatic heterocyclic compound containing two nitrogen atoms with the chemical formula C₄H₄N₂. It is white crystalline powder with slight pungent odor, slightly soluble in water and easily soluble in ethanol, ether and other organic solvents. It is a core biological heterocyclic parent nucleus with stable structure, serving as key intermediate raw material in medicine, pesticide and biochemical industry.
| Chemical Name | Pyrimidine |
| Chemical Formula | C₄H₄N₂ |
| CAS | 288-14-2 |
| Appearance | White crystalline powder |
| Melting point | 20-22℃ |
| Boiling point | 123-124℃ |
| Density（ρ20）, g/cm³ | 1.016 |
| Molecular Weight | 80.09 |
| Solubility | Slightly soluble in water, easily soluble in ethanol, ether and acetone |
Pyrimidine series includes chloropyrimidine, aminopyrimidine, fluorouracil, cytosine, uracil and other derivatives. Widely used in synthesis of anti-tumor drugs, antiviral drugs and sulfonamides pesticides, agricultural fungicides, herbicides, plant growth regulators, biological nucleic acid raw materials and fine chemical synthetic intermediates.
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