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2-amino-6-methyl-5-nitropyrimidin-4(3H)-one; CAS No.: 4214-85-1; 2-amino-6-methyl-5-nitropyrimidin-4(3H)-one. PROPERTIES: This compound features a 2-amino-6-methyl-5-nitropyrimidin-4(3H)-one structure, combining an amino group, a methyl substituent, and a nitro group on the pyrimidine framework. It typically appears as a white to off-white crystalline solid with a molecular weight of approximately 183.1 g/mol (C6H6N4O2). The melting point ranges between 140-145 C, and it exhibits moderate solubility in common organic solvents like ethanol, methanol, and DMSO while being sparingly soluble in water. Proper storage requires a tightly sealed container in a cool, dry place. Safety considerations include wearing appropriate PPE. It is classified as a skin and eye irritant (GHS07) with the hazard statement H315-H319. APPLICATIONS: 2-Amino-6-methyl-5-nitropyrimidin-4(3H)-one serves as a versatile intermediate in pharmaceutical and chemical synthesis. Its 2-amino-6-methyl-5-nitropyrimidin-4(3H)-one structure allows for participation in various reactions, including reduction of the nitro group to amine and nucleophilic substitution at the pyrimidine ring. In medicinal chemistry, it is used to develop bioactive molecules targeting kinases, proteases, and G protein-coupled receptors. The nitro group can be converted to hydroxylamine or amine derivatives to explore structure-activity relationships. This compound also functions as a building block in the synthesis of fluorescent dyes and bioconjugation reagents. Academic studies employ it as a model compound in Medicinal Chemistry journals, focusing on optimizing the 2-amino-6-methyl-5-nitropyrimidin-4(3H)-one scaffold for improved biological activity and pharmacokinetic properties.